题目内容

Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger, but we also affect our water supply in less obvious ways. You may wonder how paving (铺砌) a road can lead to less useable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave, the less water can flow into the ground to become groundwater.

Human activity is not responsible for all water shortages (短缺).Drier climates are of course more likely to have droughts (干旱) than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs.

Thinking about the way we use water every day can make a big difference, too. In the United States, a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live, but there's a lot we can do to lower the number.

You can take steps to save water in your home. To start with, use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher (洗碗机) only when it is full. Help your parents fix any leaks in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.

1.Which of the following is most likely to lead to less groundwater?

A. Using river water.

B. Paving parking lots.

C. Throwing batteries away.

D. Throwing rubbish into lakes.

2.What can be inferred from the text?

A.It takes a lot of effort to meet our water needs.

B.All water shortages are due to human behavior.

C.There is much we can do to reduce family size.

D.The average family in America makes proper use of water.

3.The last paragraph is intended to ________.

A. show us how to fix leaks at home

B. tell us how to run a dishwasher

C. suggest what we do to save water at home

D. prove what drinking glass is best for us

4.The text is mainly about ________.

A. why paving roads reduces our water

B. how human activity affects our water supply

C. why droughts occur more in dry climates

D. how much we depend on water to live

练习册系列答案
相关题目

When I was a child, I often dreamed of the time when I could leave home and escape to the city. We lived on a farm, in the winter especially, we were quite cut off from the outside world. As soon as I left school, I packed my bags and moved to the capital. However, I soon discovered that my life has its problems ,too.

One big disadvantage is money. It costs so much to go out, not to mention basics like food and housing. Another disadvantage is pollution. I suffer from asthma(哮喘), and at times the air is so bad that I am afraid to go outside. Then there is the problem of traveling round. Although I have a car, I seldom use it because of the traffic jams. One choice is to go by bicycle, but that can be quite dangerous.

Of course there are advantages. First, there is so much to do in the city, whatever you tastes in culture or entertainment(娱乐活动). Besides, there are wonderful jobs and greater chances of moving to a more important job or position. Finally, if you like shopping, the variety of goods is very surprising --- and , what is more, shops are often only a short walk away.

Is life better then, in the city? Perhaps it is , when you are in your teens(十几岁)or twenties. However, as you get older, and especially if you have small children, the peace of the countryside may seem preferable. I certainly hope to move back there soon.

1.Which of the following is true about the writer?

A. He is very old now.

B. He is in good health.

C. He prefers driving a car.

D. He lives in the city now.

2.In the passage, the writer tries to __________.

A. express his opinions about way of life

B. describe his life in the countryside

C. an interest in the outside world

D. persuade the reader to live in the city

3.How is the passage mainly developed?

A. By inferring.

B. By comparing.

C. By listing examples.

D. By giving explanations.

The role of a newspaper is to present and comment on the news. It is vital for keeping people well-informed on current affairs. In most Western countries, journalists try to shape the ideas and opinions of their readers, since in Western countries all newspapers are independent of the government. Some newspaper owners support liberal ideas including economic policies that help poor people. Other owners want policies such as lower taxes for rich people and less money to be given to poor people. You can almost judge the political ideas of a person in the West by looking at the newspaper he reads.

All newspapers report national and international news. They give the facts but also provide opinions on controversial issues in the editorials and columns of opinion. The readers of the newspaper can also comment on these editorials or articles. There are many informative articles too as well as reviews of new films and books, etc. These are very important, for if a film or book gets good reviews it will often become more successful.

All these articles require many journalists who are experts in different areas of life. All these articles come together and are checked by the chief editor of the newspaper. When he or she has made a decision on the articles, the newspaper is prepared for printing. All this work means that the journalists must work together as a team because there is a lot of pressure when you work in a newspaper office. There are constant deadlines and articles have to be fitted round advertisements, photographs and much, much more.

1.What does the underlined word “be fitted” mean?

A. be suitable B. be put

C. be read D. be measured

2.What articles comment on controversial issues?

A. Editorials and opinion columns.

B. News stories.

C. Some of the informative articles.

D. Jokes and humour.

3.Which is true about the journalists in Western countries?

A. There’s no time limit for their report articles.

B. They have no right to influence the readers’ opinions.

C. A newspaper can come out with just a journalist working individually.

D. Journalists must submit their articles before the due date.

4.Why are good reviews important to books?

A. Good reviews are excellent introduction to books.

B. Readers especially favour books with good reviews.

C. Good reviews can make readers feel relaxed and comfortable.

D. Good reviews can bring a large circulation(发行量) of the books reviewed.

With only about 1,000 pandas left in the world, China is desperately trying to clone (克隆) the animal and save the endangered species(物种).That's a move similar to what a Texas A&M University researchers have been undertaking for the past five years in a project called “Noah's Ark”.

Noah's Ark is aimed at collecting eggs, embryos(胚胎),semen and DNA of endangered animals and storing them in liquid nitrogen(氮). If certain species should become extinct, Dr.Duane Kraemar, a professor in Texas A&M University Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.

It is estimated that as many as 2,000 species of mammals, birds reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.

This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.

The entire procedure could take from three to five years to complete.

“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem,”Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Project at Texas A & M, the first–ever attempt at cloning a dog.

“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”

1.The aim of “Noah’s Ark” project is to________.

A. make efforts to clone the endangered pandas

B. save endangered animals from dying out

C. collect DNA of endangered animals to study

D. transfer the nuclear of one animal to another

2.The underlined word groundbreaking can be interpreted as __________.

A. especially new B. pioneering

C. damaging D. trouble- making

3.The best title for the passage may be ______.

A. China’s Success in Panda Cloning

B. The First Cloned Panda in the World

C. Exploring the Possibility to Clone Pandas

D. China---the Native Place of Pandas Forever

4.From the passage we know that _______.

A. Kraemer and his team have succeeded in cloning a dog

B. scientists try to implant a panda’s egg into a rabbit

C. Kraemer will work with Chinese scientists in clone researches

D. about two thousand species will probably die out in a century

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