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阅读理解

　　Are you carrying too much on your back at school? You’re not alone．Back experts in the United States are worried that young students are having back and neck problems as a result of carrying too much in their backpacks(schoolbags)．

　　“It hurts my back when I run,” said Oberlin Reyes, a student in Virginia．“It’s hard to get up the stairs with my backpack, because it’s too heavy．”

　　Oberlin is among students whose backpacks were weighed for a week in a recent study．

　　They had regular backpacks with two straps(带子)to carry them, but a number of students with heavy loads had switched to rolling backpacks(which have wheels and can roll on the ground)．

　　Shirley Park, whose backpack weighed 10 kilograms, said she changed to a rolling backpack because she was starting to have back pain．

　　How much is too much? Experts say students should carry no more than 10 to 15 percent of their own body weight．

　　A few students had one suggestion to lighten the load：less homework．

　　P．S．(附)Doctor’s suggestion：

　　① Lighten the load．Clean out binders(活页材料)and take home only the books you need that night．

　　② Wide straps are better．They send out the weight over your shoulders more evenly(均匀)．And be sure to wear both straps rather than hanging the pack over one shoulder．

　　③ Pack smart．The heavier things should be packed closed to the back．

　　④ Bend both knees when you pick up the pack, and don’t just bend over at the waist(腰)．

(1)

“________” is the main idea of the text．
[　　]
A．	The problem of backpacks is worth studying
B．	The problem made by heavy backpacks
C．	What is the best backpack for a student
D．	How to make students’ backpacks light

(2)

According to Enderlin Reyes and Shirley Park, we know ________．
[　　]
A．	students have to do too much homework
B．	backpacks have to carry heavy backpacks
C．	backpacks without wheels are bad for students
D．	too much homework leaves students no free time

(3)

The expression “switched to” in the text perhaps means ________．
[　　]
A．	started to use
B．	turned to
C．	caught up
D．	used for

(4)

According to the passage, it’s better for a student of 40 kilograms to carry a backpack of ________ at most by the words of experts．
[　　]
A．	10 kg
B．	8 kg
C．	6 kg
D．	7 kg

(5)

If students follow the doctor’s suggestions they ________．
[　　]
A．	may lighten their backpacks
B．	can learn how to help themselves
C．	may feel their backpacks are lighter
D．	will know how to wear backpacks

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阅读理解

　　Are you carrying too much on your back at school?You’re not alone．Back experts(专家)in the USA are worried about that young students are having back and neck problems because they are carrying too much in their backpacks．

　　“It hurts my back when I run,”said Ebelin Reyes, a student in Virginia．“It’s hard to get up the stairs with my backpack because it’s too heavy．”Students have to carry heavy backpacks on their backs for a whole week’s study．Ebelin is one of them．They have regular(固定的)backpacks with two straps(带子)to carry them, but a number of students with heavy loads(负担)have switched to rolling backpacks．The backpacks have wheels and can roll on the ground．Shirley Park’s backpack weighs 10 kilos, and she said,“I’ll change to a rolling backpack because I am starting to have back pain．”

　　How much is too much?Experts say that students should carry no more than 10％ to 15％ of their own body weight．A few students have had a good idea to lighten(减轻)the load：less homework．

　　Doctor’s suggestions：

(1)Lighten the load．Take home only the books the students need that day．

(2)Wide straps are better．They can send out weight over your shoulders(肩)and be sure to wear backpacks with two straps．

(3)The heaviest things should be packed closest to the back．

(4)Bend(弯曲)both knees when you pick up the pack, don’t just bend over the waist(腰)．

(1)

The main idea of the passage is about ________．
[　　]
A．	the problems made by rolling backpacks
B．	the advantage of backpacks
C．	the best backpacks for students
D．	how to lighten students’ backpacks

(2)

From what Ebelin Reyes and Shirley Park said, we know ________．
[　　]
A．	students like to carry heavy backpacks
B．	students have to do a lot of homework
C．	backpacks with wheels are bad for students
D．	students have no time to play because of heavy backpacks

(3)

The underlined word“switch to”means ________．
[　　]
A．	use for
B．	turn to
C．	catch up
D．	begin to use

(4)

According to the experts, it’s better for a student of 40 kilos to carry a backpack of ________ at most．
[　　]
A．	10 kilos
B．	8 kilos
C．	6 kilos
D．	7 kilos

(5)

If students follow the doctor’s suggestions, they ________．
[　　]
A．	may do less homework
B．	may feel their backpacks are lighter
C．	can learn how to enjoy themselves
D．	will know why to wear heavy backpacks

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Today there are 6 billion people on the earth. By the year 2050 there may be 12.5 billion. This means we need more food.

One way to produce more food is by growing stronger plants. For thousands of years, farmers have made plants better. Every season, they pick the best plants for the next season. It works very slowly. Since 1983, scientists have been able to change plants more quickly by changing their genetic material (遗传物质). Foods from plants grown in this way are called genetically modified foods (转基因食品), or GM foods.

By changing the genetic material of a plant, it is possible to make new plants. They make plants which are strong against plant diseases. They can also help in our diseases: a kind of rice is being prepared (准备), for example, which stops people from becoming blind.

Rich countries produce GM food because they are easy to grow and bring in more money. Poor countries are interested in them because they help produce more food.

GM plants are not natural. No one knows how good or bad they are. Making GM foods is only one way of feeding people in 2050. There are strong feelings against them, because they are unnatural. They may feed people, then hurt them or their children later. But, both rich and poor countries are very interested in their use, and they are not going to go away. In 2050 we may think differently about them.

根据短文内容，从A、B、C、D四个选项中选择正确答案，并将其字母代号填入答题卷相应空格内。（共5小题，每小题2分，满分10分）

86．GM foods are made by .　　　　　　　　　　　　　　　　　　　　　　

　　　 A．farmers　 B．workers　 C．scientists D．plants

87．What are the good things about GM foods ?　　　　　　　　　　　　　　　　　

　　　 A．They make plants strong against diseases.

　　　 B．They are unnatural.

　　　 C．They can help in human diseases.

　　　 D．Both A and C.

88．GM foods .　　　　　　　　　　　　　　　　　　　　　　　　　　

　　　 A．are a quick way to produce food　 B．grow in the wild

　　　 C．are safe　　　　　 D．are grown only in rich countries

89．Why do some people not like GM foods ?　　　　　　　　　　　　　　　　　　

　　　 A．They are not useful. B．They are not helpful.

　　　 C．They are not natural.　　　 D．They are not cheap.

90．From the reading we know that .　　　　　　　　　　　　　　　　　　

　　　 A．GM foods will disappear one day in the future

　　　 B．GM foods will not disappear in the future

　　　 C．people will not be interested in GM food

　　　 D．people will have to stop using GM food

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阅读理解

　　Today there are 6 billion people on the earth．By the year 2050 there may be 12.5 billion．This means we need more food．

　　One way to produce more food is by growing stronger plants．For thousands of years, farmers have made plants better．Every season, they pick the best plants for the next season．It works very slowly．Since 1983, scientists have been able to change plants more quickly by changing their genetic material(遗传物质)．Foods from plants grown in this way are called genetically modified foods(转基因食品), or GM foods．

　　By changing the genetic material of a plant, it is possible to make new plants．They make plants which are strong against plant diseases．They can also help in our diseases：a kind of rice is being prepared(准备), for example, which stops people from becoming blind．

　　Rich countries produce GM food because they are easy to grow and bring in more money．Poor countries are interested in them because they help produce more food．

　　GM plants are not natural．No one knows how good or bad they are．Making GM foods is only one way of feeding people in 2050．There are strong feelings against them, because they are unnatural．They may feed people, then hurt them or their children later．But, both rich and poor countries are very interested in their use, and they are not going to go away．In 2050 we may think differently about them．

根据短文内容，从A、B、C、D四个选项中选择正确答案。

(1)

GM foods are made by ________．
[　　]
A．	farmers
B．	workers
C．	scientists
D．	plants

(2)

What are the good things about GM foods?
[　　]
A．	They make plants strong against diseases．
B．	They are unnatural．
C．	They can help in human diseases．
D．	Both A and C．

(3)

GM foods．
[　　]
A．	are a quick way to produce food
B．	grow in the wild
C．	are safe
D．	are grown only in rich countries

(4)

Why do some people not like GM foods?
[　　]
A．	They are not useful．
B．	They are not helpful．
C．	They are not natural．
D．	They are not cheap．

(5)

From the reading we know that．
[　　]
A．	GM foods will disappear one day in the future
B．	GM foods will not disappear in the future
C．	people will not be interested in GM food
D．	people will have to stop using GM food

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根据短文内容，选择最恰当的答案

　　Travel is fun and exciting, but it's not if you get sick．You may think,“Not me, I won't get sick on my vacation．”But for many people, that is what happens．

　　A vacation is supposed to be a time for relaxing．But very often it is not．“What can I do when I am a tourist?”This is what we should often think about．Usually there are so many places to visit：museums, shops, parks and churches．You may spend most days walking around these places．This can be very tiring．Your feet may hurt．And you may have a terrible headache after a few hours．If this is what you feel, you should take a rest．Don't ask your body to do too much．A tired body means a weak body．And a weak body can make you get sick easily．Just sit down for a few hours in a nice spot．In good weather, look for a quiet park bench．Or you can rest at a café．You can learn a lot by watching people when you have a rest．

　　Sleep is also important．If you want to stay healthy you need enough sleep．You may have trouble sleeping at night when you travel．Your hotel room may be noisy, or the bed may be uncomfortable．If that is true, don't be afraid to change rooms or hotels．You may not get enough sleep for another reason．You may want to stay out late at night．In many cities the night life can be very exciting．Then you should plan to sleep for an hour during the day．That extra hour can make a big difference．

　　Finally, if you want to stay healthy, you must eat well．That means eating the right kinds of foods．Your body needs fresh fruit and vegetables, and some meat, milk or cheese．When you are in a new country you may want to try new foods but you need to be careful about how much you eat．Lots of rich food is not very good for you．

(1)

Traveling around can be ________．
[　　]
A．	the best way to relax
B．	very tiring
C．	no fun
D．	unhealthy

(2)

It's a good idea to ________ when travelling．
[　　]
A．	spend every night in hotels
B．	change hotels
C．	get some rest every day
D．	take lots of medicine

(3)

According to the passage, we can get to know the local people by ________．
[　　]
A．	watching them
B．	visiting their homes
C．	talking to them
D．	going to the shops

(4)

If you stay out late at night, you'd better ________．
[　　]
A．	enjoy the night life of the city
B．	eat more rich food
C．	sleep for an hour during the day
D．	go for a holiday

(5)

Which is not good for your health?________
[　　]
A．	Fresh fruit and vegetables．
B．	Some meat, milk or cheese．
C．	Some new food．
D．	Plenty of rich food．

(6)

Which of the following is true to stay in good health on a vacation?________
[　　]
A．	Try not to visit every museum and church in a place．
B．	Eat proper food, have enough sleep and rest．
C．	Stay up late every night and sleep for an hour in the day．
D．	Visit as many shops as you can．

(7)

This passage is mainly about ________．
[　　]
A．	what you eat when you travel
B．	how exciting travel is
C．	relaxing when you travel
D．	how to stay healthy when you travel

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