题目内容

All across California, honeybees are flying away from their hives(蜂箱) and dying. Empty hives are causing a lot of worry about some important food crops.

Bees give us a lot more than delicious honey. They are pollinators(授粉者)—they enable plants to produce the fruits and nuts we enjoy by carrying pollen from one plant or flower to the next. The wind pollinates oats, corn, and wheat, but many other plants (like apple and cherry trees and melon vines) depend on insects, bats, and birds. In the U.S., millions and millions of bees kept by human beekeepers fly around doing a lot of this important work for food crops. “Bees are worth protecting because their work adds so much to our diet,” says Dr. Jeff Pettis of the Bee Research Laboratory.

California’s almond (杏仁) crop alone depends on about half the bees in the country. But now the almond crop and many others could be in trouble with so many bees dying.

Researchers at government and university labs all over the country are trying to figure out why so many bees are dying. However, bees are hard to study. Most die away from the hive, so researchers don’t have dead bodies to examine. And when researchers return to a hive after two weeks, about half the bees they studied on their first visit will be dead, replaced by new ones in the natural life cycle of bees. “It isn’t like studying a large animal like a cow that doesn’t move around much and is easy to find out in the cow field,” says Pettis.

Researchers have some ideas about what could be affecting bee health. They could be sick from poisons widely used to kill insects, or they might not be getting enough good food to stay strong. Also, tiny insects called mites feed on bees. “A virus or bacteria could also be doing the killing.” explains Pettis.

1.What is Paragraph 2 mainly about?

A. The wind helps pollinate.

B. Bees are important in food crops.

C. Bees give us a lot of delicious honey.

D. Cherry trees are pollinated by bees.

2.Bees are hard to study because ____________.

A. they move around too much

B. new bees soon replace all the bees studied by researchers

C. they are too tiny

D. they never return to hives

3.What could cause so many bees to die?

A. Poisons to kill birds.                                                               B. Eating too much.

C. Large insects.                                                                          D. Some virus.

4.What can we learn from the article?

A. A large number of bees have died in the hive.

B. Without bees, some foods would disappear from our diet.

C. Only researchers in California want to know what kills bees.

D. Large animals are easier to study than tiny insects.

 

【答案】

 

1.B

2.A

3.D

4.B

【解析】

试题分析:蜜蜂是人类的好朋友,它们不仅给我们提供美味的蜂蜜,也帮助植物授粉,而且其中加利福尼亚的杏仁作物只能靠蜜蜂授粉才可以结果。所以当地蜜蜂的大量死亡引起了人们的担忧,也促使研究人员努力去找到其中的原因。

1.B推理判断题。文章第二段介绍了蜜蜂除了给人们提供蜂蜜以外,还可以帮助植物授粉,由此判断B选项正确。

2.A 细节理解题。根据文章第四段Pettis说的话“It isn’t like studying a large animal like a cow that doesn’t move around much and is easy to find out in the cow field,”可知蜜蜂难以观察的原因是它们不会呆在固定的地方,所以A选项正确。

3.D细节理解题。根据文章末段“A virus or bacteria could also be doing the killing.”可以判断D选项正确。

4.B推理判断题。根据文章第三段可知某些植物必须依靠蜜蜂授粉,所以如果没有蜜蜂这些植物将不会结果实,由此判断B选项正确。

考点:考查科学知识类短文阅读。

 

练习册系列答案
相关题目

Shopping in the United States changes a lot.About ninety years ago most people shopped in small stores that were owned by one person or a family.Women went from the bakery to the butcher's to the grocer and on to the fruit and vegetable seller in order to get their food for the week.

       Then about sixty years ago, supermarkets were born.In a supermarket, people could get all the different kinds of food they needed without going to different stores.

       The next big change in shopping in the United States was the shopping mall.A shopping mall is a group of stores under one roof.Because malls allowed people to shop without worrying about the weather, they soon became very popular.The mall became a place for people to socialize in addition to shopping.If you walk through a mall, you will see older people sitting, chatting and drinking coffee.Malls are places for teenagers to hang out.Many teens will often just "go to the mall" and spend time with their friends.

       The recent change in American shopping was the superstore.Large chain stores such as Wal-Mart, Office Depot and Toys "R" Us have been built all across the United States.Because they are so large, they can buy goods at a great discount and sell them much cheaper than smaller stores.

       Sometimes, when they are built near small towns, many of the small town stores have to close.They just cannot compete with their giant neighbors.

       And now, online shopping is becoming more and more popular all over the States.People are too busy to go to the physical stores, so they go shopping over the Internet.Online shopping has lots of advantages.For instance, online stores are usually available 24 hours a day.Searching or browsing online shops can be faster than browsing the physical stores.While, online shopping also has its disadvantages.People are at higher risk of being cheated on the part of the merchant than in a physical store.And privacy of personal information may be let out.

Which of the following shows the right order of shopping development in the United States?

       ①small stores ②superstores  ③shopping malls   ④shopping online

       ⑤supermarkets

       A.①②③④⑤         B.①⑤②③④

       C.①⑤③②④      D.②③④①⑤

Which is the place for people to spend time with others according to the passage?

       A.Shopping malls.      B.  Small stores.   

       C.Supermarkets.           D.  Superstores.

Why can the superstores sell products at much lower prices?

A.Because they are built near small towns.

       B.Because they are across the United States.

       C.Because they sell all kinds of products people need.

       D.Because they can buy goods at a reduction in the price.

What's the disadvantage of online shopping according to the passage?

       A.Wasting time.          B.Leaking personal information.

       C.Fixed prices.          D.No chance to do physical activities.

Our planet is in trouble.Polluting industries and corporations are destroying our planet, resulting in increasing global temperatures, melting ice caps, and economic turmoil(混乱).All across the country, folks are waking up to the reality that if they do not ad now to solve the environmental problems of today, the consequences are unthinkable.If we don’t i ct now, who will? Fortunately, an amazing team of young leaders are taking action.They a e getting involved with the Greenpeace Student Network!
The Student Network has student leaders who deal with the most pressing environmental issues.We have organized and won inspiring campaigns.Convincing corporations to change their ways and politicians to do the right thing.All thanks to our team of leaders, known as Campus Coordinators.
Campus Coordinators are located all across the United States, and even Canada! They work on Greenpeace Student Network campaigns at their schools and in their communities.They organize events like film screenings and days of action.They hold meetings with elected officials, work with the media, recruit(招募) volunteers, and mobilize(动员) their campus to take action! They do all of this with excellent training and expert support from our team of Student: Network staff.Campus Coordinators develop their leadership skins and become an unstoppable force for green solutions on pus and in their community.
Currently, the Greenpeace Student Network is campaigning to solve the largest environmental threat to humankind: global warming.With only months until a new international treaty(协议)on global warming is decided this December, the time to stand up and take the lead has never been
more important,
If you are concerned with environmental issues, want to mobilize your scho4l and community, nd are ready to become a skilled organizer and strong leader, then the Campus Coordinator position is for you! We are now accepting applications for the Fall 2009-Spring 2010 academic year.
Are you ready to be a leader on your campus?
Apply to be a Campus Coordinator today!        
【小题1】Why does the author write the passage?                        

A.To describe the serious environmental problems.
B.To call on students to apply to be Campus Coordinators,
C.To explain the advantage of the Greenpeace Student Network..
D.To stress the importance of solving environmental problems.
【小题2】We can learn from the passage that the Greenpeace Student Network _____.
A.is a place where school leaders are framed
B.is a worldwide organization helping student leaders
C.helps solve corporations’ economic problems
D.helps deal with global warming at present
【小题3】If you are a Campus Coordinator, you may probably _____.
A.have.the chance to play a role in a film
B.find a job at a TV station
C.develop your leadership skills
D.build up your strength.
【小题4】Which of the following is NOT mentioned in the passage?
A.The duty of Campus Coordinators.
B.The distribution of Campus Coordinators.
C.The aim of the Greenpeace Student Network.
D.The history of the Greenpeace Student Network.

Shopping in the United States changes a lot.About ninety years ago most people shopped in small stores that were owned by one person or a family.Women went from the bakery to the butcher's to the grocer and on to the fruit and vegetable seller in order to get their food for the week.
Then about sixty years ago, supermarkets were born.In a supermarket, people could get all the different kinds of food they needed without going to different stores.
The next big change in shopping in the United States was the shopping mall.A shopping mall is a group of stores under one roof.Because malls allowed people to shop without worrying about the weather, they soon became very popular.The mall became a place for people to socialize in addition to shopping.If you walk through a mall, you will see older people sitting, chatting and drinking coffee.Malls are places for teenagers to hang out.Many teens will often just "go to the mall" and spend time with their friends.
The recent change in American shopping was the superstore.Large chain stores such as Wal-Mart, Office Depot and Toys "R" Us have been built all across the United States.Because they are so large, they can buy goods at a great discount and sell them much cheaper than smaller stores.
Sometimes, when they are built near small towns, many of the small town stores have to close.They just cannot compete with their giant neighbors.
And now, online shopping is becoming more and more popular all over the States.People are too busy to go to the physical stores, so they go shopping over the Internet.Online shopping has lots of advantages.For instance, online stores are usually available 24 hours a day.Searching or browsing online shops can be faster than browsing the physical stores.While, online shopping also has its disadvantages.People are at higher risk of being cheated on the part of the merchant than in a physical store.And privacy of personal information may be let out.
【小题1】Which of the following shows the right order of shopping development in the United States?
①small stores ②superstores ③shopping malls  ④shopping online
⑤supermarkets

A.①②③④⑤B.①⑤②③④
C.①⑤③②④D.②③④①⑤
【小题2】Which is the place for people to spend time with others according to the passage?
A.Shopping malls.B. Small stores.
C.Supermarkets.D.Superstores.
【小题3】Why can the superstores sell products at much lower prices?
A.Because they are built near small towns.
B.Because they are across the United States.
C.Because they sell all kinds of products people need.
D.Because they can buy goods at a reduction in the price.
【小题4】What's the disadvantage of online shopping according to the passage?
A.Wasting time.B.Leaking personal information.
C.Fixed prices.D.No chance to do physical activities.

At railway stations all across Britain next week, groups of students will gather with their backpacks to wait for the trains that will carry them home for Christmas. This is as large a movement of human beings as before, but with more contradictory traffic flows, so that trains filled with the young pass each other travelling in every direction.

At first, I went home every weekend with my washing, but then those visits became less regular. How did I let my parents know I was coming? They had no phone. Perhaps I wrote to them ("Expect me with dirty shirts this Friday afternoon"), but more likely I didn't let them know, and just turned up or didn't turn up, not understanding that my parents' dashed hopes of seeing me were a greater casualty of my carelessness than a spoiled tea.

And in all this I suspect I was typical, at least of young men. As for our fathers and mothers, none of them talked of "empty-nest syndrome", even though its implication that the principal human duty is to protect and feed the young would have suited their generation better than ours. Then, the feelings of loss went without a name. Today, it's a condition with remedies, which will make parents feel more enjoyable in their life. The Mayo Clinic, for example, suggests you try to maintain regular contact with your children through "visits, phone calls, emails, texts or video chats". If you feel depressed, lean on loved ones or your mental health provider. Above all, stay positive: "Thinking about the extra time and energy you might have to devote to your marriage or personal interests after your last child leaves home might help you adapt to this major life change."

What can’t be denied, however, is that children often leave home. In modern societies, this is what they do. Christmas is the very time they can be depended on to return. For the non-religious, that may be this season’s true comfort and significance.

1.The main reason for the busy traffic across Britain next week is that         .

A.young students will travel home for Christmas

B.young people will travel in every direction

C.it is a large movement of human beings

D.the traffic flows will be more contradictory

2.From the second paragraph we can learn that the writer      .

A.went home every week to wash dirty clothes

B.understood his parents’ desire of seeing him

C.didn’t understand his parents’ feelings

D.went home to see his parents regularly

3.The underlined word “remedies” in paragraph 3 is closest in meaning to          .

A.reasons           B.excuses           C.habits            D.solutions

4.From the last paragraph we know that        .

A.in modern society, children should leave home

B.Christmas is likely a time for family reunion

C.the significance of Christmas is celebration

D.Christmas is not a comfort for the non-religious

5.From the passage we can infer that by writing the article the writer’s purpose is to       .

A.persuade the young to show concern for their parents

B.ask the young to go home regularly

C.make the young understand their parents’ interests

D.enable the young to be more independent

 

 

Child models are very much in demand all across the world. Many magazines and online stores that sell products for children like their models young. For this reason, they seek out children who can model clothing and have no problem posing (摆姿势)and smiling for the camera. Those who are seeking out child models for thelr advertising can go to online modeling sites and view pictures of children who are web models. They can take a look at their portfolio(整套照片)and decide whether they will accept them.

    Parents who are seeking to get their children into the modeling business can also create a portfolio for their children and put them online. They can look for jobs for their chldren through an online modeling site, or they can wait for job offers for their children. These online sites act as web modeling agency for models young and old alike. Anyone who has the desire to be a model can get a portfoilo together and join the site.

If you have a child who you want to be a model, you should first start a portfolio for him or her and then join an online modeling agency. Once you join the agency, you can then start to look for jobs, clients(客户)will post jobs that can be found in the search. You can look for jobs for young models and see if your child will fit what the client is looking for. In many cases, the client will send clothing for the child to wear and a descriptlon of poses and the job can be done close to home.

Online modeling agencies are not only for child models. Older models, teen models, men and women can model for these sites. A great deal of the modeling is for online websites. This is an entirely new field in the world of modeling and much easier to get into than the older modeling agencies. There is no traveling or expensive photo shoots needed. All that is needed to make children into models is a nice portfolio and a photogenic(上相的)child.

1. Child models are needed to____________.

    A. create more job offers

    B. set the fashion for children

    C. increase the sales of child products

    D. manage online stores that sell teen magazines

2.The underlined Word "they" in Paragraph 1 refers to_______.

A. parents                                 B. chld models

C. online modeling sites                     D. people looking for child models for advertising

3. What should parents do if they’d like their children to become models?

    A. Train them to hold special poses.         B. Choose them beautiful clothes.

    C. Take expensive photos of them.                     D. Put their portfolio on online modeling sites.

4. Why are online modeling agencise popular?

    A. Because they are easily accessible to most people.

    B. Because they charge no fees for their service.

    C. Because this is an entirely new field.

    D. Because this can make a child more photogenic.

5.This passage is mainly about______.

    A. a growing need for child models          B. an increase in modeling agencies

    C. the change in the world of modeling              D. the attraction of the world of modeling

 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网