网址：http://m.1010jiajiao.com/timu3_id_2418238[举报]
You are probably familiar with the saying：An apple a day keeps the doctor away. A recent research carried out by the Chinese University of Hong Kong may change the saying:
An apple a day may keep aging away.
The research chose fruit flies(果蝇), as they share many genes(基因)with humans. The fruit flies were either fed normally or had an apple extract(浓缩物) added to their diet.
It turned out that those fruit flies that were given apple extract lived about 55 days—five days longer than the flies that were normally fed. The research group also found it easier for the flies to walk，climb and move about as they aged.
According to the result, the researchers believed that the antioxidants(抗氧化剂) in the apple extract helped clean up dangerous chemicals(化学物质) that cause illnesses，as well as aging.
In another study，researchers examined diets of thousands of women. They discovered that those who regularly ate apples were 20 percent less likely to suffer heart illnesses and stroke.
The apples’ genetic code(遗传密码) was discovered recently. It allows scientists to develop nicer and healthier fruits. Researchers are already using the information to grow a kind of apples full of antioxidants that can keep eyes and joints healthy and protect humans against heart illnesses and cancer.
Apples that kill the desire(欲望) to eat could also be produced, with the first“extra-healthy’’apples on supermarket shelves within just four or five years.
The team that keeps studying apple DNA includes 100 scientists from five countries. Their research also suggests that around 65 million years ago, when dinosaurs began to die off the plant，which would finally become today’s apple tree, experienced a great genetic change. The number of many of its genes doubled. The extra genes allowed the apple to get used to worse conditions and go through a different development from peaches，strawberries and other related fruits.
1.Why were fruit flies used for the research?
A.Because they have a similar diet to humans.
B.Because they have a history as long as apples.
C.Because they share a lot of genes with humans.
D.Because they feed on nothing but apple extract.
2.What result did the researchers find out?
A.Apples produce chemicals that can change human genes.
B.Apples have antioxidants that kill chemicals that cause aging.
C.Apples are rich in vitamins that are needed in humans’bodies.
D.Apples produce chemicals that make apples taste more delicious.
3.What happened to apples around 65 million years ago according to the research?
A.Their genes stopped their development as the environment got worse.
B.Their genes became twice in number but they finally died off like dinosaurs.
C.They experienced a great genetic change making them used to worse conditions.
D.They went through a similar development to peaches, strawberries and other related fruits.
4.What can we infer(推断)from the passage?
A.Eating apples may bring us more advantages than we might believe before.
B.People who have the habit of eating apples don’t need to see a doctor.
C.Apples that kill the desire to eat are already available in supermarkets now.
D.People will eat apples instead of peaches and strawberries from now on.
查看习题详情和答案>>
1.爱护校园内的花草树木
2.保持校园整洁，不乱扔废弃物
3.节约用水，离开教室前记得关灯
4.坚持锻炼，增强体质
5.礼貌待人，同学间相处融洽
注意：
1．词数80左右；开头已给出，不计入总词数。
2．覆盖所有要点，可适当发挥，增加细节，以使行文连贯。
3．参考词汇：爱护protect; 乱扔废弃物drop litter; 坚持keep on doing
Make Our School Greener
In order to make our campus green and harmonious to live and study in， it is suggested that we students should do many things,which can be listed as follows.
查看习题详情和答案>>
| A. What’s your plan for the future? B. How will you keep in touch with them? C. I feel excited and sad. D. May I ask you some questions? E. What else would you like to say to your teachers and classmates? |
A. Hello, Long Yulin. I know you’re one of the best graduates. 【小题1】
B. Yes, please.
A. How do you feel now?
B. 【小题2】 .
A. What are you going to do before leaving school?
B. I’m going to take some photos with my teachers and classmates, give gifts to my teachers and write best wishes to my classmates
A. Will you miss your teachers and classmates?
B. Sure, and I’ll remember the past three years of my school life for ever.
A. 【小题3】
B. By sending e-mails, making telephone calls or writing letters.
A. When are you going to have a get-together with your classmates?
B. We’ll be back for our school’s 20th anniversary ceremony.
A. 【小题4】
B. I’m going to be a scientist, so I’ll keep on working hard at my lessons to make my dream come true.
A. 【小题5】 .
B. First, I want to say “Thanks” to my teachers for teaching me so well. Second, I wish my teachers and classmates health, happiness and good luck. At last, I hope our school will continue to be the top in Tongren. 查看习题详情和答案>>
“One day, I was surprised to find that I weighed about 200 pounds,” Rocha says. “I thought I had to do something.”
Rocha is from a boxing (拳击) family—his father and two older brothers are professional boxers. So he decided to start boxing. He began with simple exercises, like sit-ups and push-ups (俯卧撑). Then Rocha started jogging(慢跑). “No kid likes running,” he says. “I don’t want to do it, either, but I have no choice but to keep on.”
Months later, Rocha joined a boxing club in his city. He is always the first kid at the club to begin exercising, and the last to leave with sweat (汗水) on his face. Every day he boxes for about three hours.
“Rocha works very hard,” says his coach, Hector Lopez. “It’s surprising to see him lose the pounds so quickly. I’ve never seen anything like this in my 20 years of coaching.”
Rocha is very happy with his weight now. There is a family photo in his room from 18 months ago. “Each time I look at the photo, I laugh at myself. I was so big back then,” Rocha says. “I look 100 times thinner and 1,000 times stronger now.”
【小题1】How much weight did Rocha lose in six months?
A. At least 24 pounds. B. At least 30 pounds. C. At least 55 pounds.
【小题2】 Rocha said he had no choice but to keep on running because_______.
A. he liked running very much
B. he wanted to be thin and strong
C. he wanted to be a professional boxer
【小题3】What makes Coach Hector Lopez surprised?
A. Rocha lost weight so quickly.
B. Rocha was so fat 18 months ago.
C. Rocha comes from a boxing family.
【小题4】What’s the correct order of the following sentences?
a. He did some sit-ups and push-ups.
b. He lost the pounds quickly.
c. He joined a boxing club.
d. He began running.
f. He boxed for about three hours every day.
A. a-d-c-f-b B. d-a-f-c-b C. a-d-f-c-b
【小题5】The writer mainly wants to tell us _______.
A. Rocha is a hardworking boy
B. it is important to get exercise
C. everything is possible if you work hard 查看习题详情和答案>>
1
|
Dear editors (编辑),
Xia Ming |
I’m a slow (慢的) student in my class. Most of my classmates are much
better than me. So I get very stressed out. It’s difficult to keep on working hard and it’s really not fun. And
I think although I spend much time studying for the tests, I can’t get good grades.
My father gives me some help sometimes. He tells me not to worry about it. But
what do you think I should do? A reader read the letter from the magazine and here is his answer:
|
Dear Xia Ming, Many famous people are not so good at the age like you. Edison, the famous scientist, had a bad headache for his studies when he was a 12-year-old boy. But everyone knows that he did a lot for the people in the world. And Newton had the same story like him. When you are feeling stressed out, just smile (微笑) and take a deep breath (深呼吸), then try your best. You should believe tomorrow is another day. Thumbelina |
1.Xia Ming worried about __________.
A. his classmates B. his life C. his study
2.Thumbelina gave __________ examples in the letter.
A. one B. two C. three
3.Thumbelina wrote about those famous people to __________.
A. make Xia Ming feel better
B. make Xia Ming laugh
C. show how much she knows
4.Which is NOT true according to the letter?
A. Xia Ming has fun studying at school.
B. Edison is famous in the world.
C. Xia Ming’s father always helps him with his study.
5.“Tomorrow is another day” tells us __________.
A. it’s the weekend tomorrow
B. tomorrow is second day
C. there are hopes in our lives
查看习题详情和答案>>