books you have in your schoolbags! A. What many B. How many C. How much D. What much——青夏教育精英家教网—

books you have in your schoolbags! A. What many B. How many C. How much D. What much 【查看更多】

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     In your schoolbags, you may have a pencil, some kinds of pens, a ruler and some books. None of these things grow in the fields. They were all made in factories. And, of course, they were invented by some people. There have not always been pencils or pens, a ruler and books. Thousands of years ago, no one knew about these things.
     Who invented them first? How did they have such clever ideas? We always don't
know. There have been many thousands of inventions, large and small, in the human
history. Some of these inventions have changed the world, such as paper, printing,
radio, telephone and computer, and we know the inventors. But we have forgotten
most of the other inventors.
     Who invented the clock, for example, or the lock to the door? We don't know.
There have been thousands of inventors and we should be grateful to them for their
clever ideas. Will you be one of them when you grow up?

1. Most things in your schoolbags are made of .

     A. wool
     B. wood
     C. metal
     D. nylon

2. The inventors invented these things because .

      A. their children were at school
      B. they hoped to save some money
      C. they had a lot of clever ideas
      D. they had good machines

3. The history books tell us .

      A. who invented paper and printing
      B. who invented clocks and doors
      C. when the first key was invented
      D. how much the silk cost

4. We don't know .

     A. the names of the inventors of paper
     B. the names of the inventors of telephone
     C. the names of the inventors of lamp
     D. the names of most inventors

5. The writer wonders .

      A. if you are an inventor
      B. if you want to be an inventor
      C. what's invented by you
      D. how many inventors you know

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完形填空

　　Are you carrying too much on your back at school? I'm sure lots of the (1) of your age will say“Yes”.

　　Not only the students in China have this problem, but also children in the United States have (2) schoolbags.

　　Doctors are starting to (3) that younger and younger students are having (4) problems as a result of school bags being too heavy for them.

　　“It's hard for me to (5) with my bag because it's so heavy.”said Rick Hammond, an 11-year-old student in the US.

　　Rick is (6) the students who have common schoolbags with two straps (带子)to carry them, (7) many students choose rolling(滚动的)bags.

　　But even with rolling bags, getting upstairs and buses is still a problem for children. Many of them (8) their necks and backs because of the heavy schoolbags.

　　But (9) is too much? Doctors say students should carry no more than 10％ to 15％ of their own body weight(重量).

　　Scott Bautch, a back doctor, said children (10) Grade 4 should stay with 10％. But it is also important that older children don't stay over 15％, because their bodies are (11) .“Children are losing their balance(平衡)and (12) with their schoolbags,”he said.

　　Parents and teachers are starting to tell children to only take home the books they be reading (13) . Some teachers are using pieces of paper or (14) workbooks for students to take home.

　　One of the best answers is, as some children said, to have (15) homework at all!

(1)

[　　]

A. teachers	B. parents
C. children	D. old people

(2)

[　　]

A. small	B. big
C. heavy	D. light

(3)

[　　]

A. forget	B. remember
C. worry	D. hope

(4)

[　　]

A. arm and leg	B. hand and arm
C. head and neck	D. back and neck

(5)

[　　]

A. go to bed	B. go into the classroom
C. go upstairs	D. go shopping

(6)

[　　]

A. among	B. of
C. between	D. in

(7)

[　　]

A. because	B. so
C. but	D. if

(8)

[　　]

A. break	B. hurt
C. carry on	D. look after

(9)

[　　]

A. what size	B. how many
C. how	D. how much

(10)

[　　]

A. of	B. over
C. under	D. like

(11)

[　　]

A. important	B. growing
C. moving	D. interesting

(12)

[　　]

A. catching up	B. standing up
C. going on	D. falling down

(13)

[　　]

A. next night	B. that night
C. tomorrow evening	D. last night

(14)

[　　]

A. thick	B. thin
C. heavy	D. big

(15)

[　　]

A. some	B. much
C. few	D. no