You have often __1__ people talk about work. Perhaps you have __2__ your friends about how hard you worked to get something done. However, you may have done no work __3_ you think you worked hard.
A boy is pushing a big box very hard, but the box is __4__ heavy for him to move and he may __5__ to push against the box. __6__ the language of science, he has not done __7__ work. Can you think you are working when you are studying or talking?
In science, work is only done when a force(力) moves something that has weight through a distance（距离）.
Work =" force" × distance moved.
__8_ you want to find out whether work is done, _9_ yourself, “Is a push or a pull moving something through a distance?” If your answer is __10_, then work is being done.

You have often __1__ people talk about work. Perhaps you have __2__ your friends about how hard you worked to get something done. However, you may have done no work __3_ you think you worked hard.

A boy is pushing a big box very hard, but the box is __4__ heavy for him to move and he may __5__ to push against the box. __6__ the language of science, he has not done __7__ work. Can you think you are working when you are studying or talking?

In science, work is only done when a force(力) moves something that has weight through a distance（距离）.

Work =" force" × distance moved.

__8_ you want to find out whether work is done, _9_ yourself, “Is a push or a pull moving something through a distance?” If your answer is __10_, then work is being done.

You have often 1 people talk about work. Perhaps you have 2 your friends about how hard you worked to get something done. However, you may have done no work 3 you think you worked hard.
A boy is pushing a big box very hard, but the box is 4 heavy for him to move and he may 5 to push against the box. 6 the language of science, he has not done 7 work. Can you think you are working when you are studying or talking?
In science, work is only done when a force(力) moves something that has weight through a distance(距离).
Work =" force" × distance moved.
8 you want to find out whether work is done, 9 yourself, “Is a push or a pull moving something through a distance?” If your answer is 10, then work is being done.

1. 1.
   1. A.
      asked
   2. B.
      wanted
   3. C.
      listened
   4. D.
      heard
2. 2.
   1. A.
      said
   2. B.
      told
   3. C.
      talked
   4. D.
      spoken
3. 3.
   1. A.
      though
   2. B.
      so that
   3. C.
      while
   4. D.
      because
4. 4.
   1. A.
      very
   2. B.
      so
   3. C.
      too
   4. D.
      such
5. 5.
   1. A.
      be afraid
   2. B.
      be sure
   3. C.
      not like
   4. D.
      like
6. 6.
   1. A.
      In
   2. B.
      With
   3. C.
      As
   4. D.
      For
7. 7.
   1. A.
      a
   2. B.
      no
   3. C.
      some
   4. D.
      any
8. 8.
   1. A.
      If
   2. B.
      After
   3. C.
      While
   4. D.
      As soon as
9. 9.
   1. A.
      to ask
   2. B.
      just ask
   3. C.
      only think
   4. D.
      to think
10. 10.
    1. A.
       “Right”
    2. B.
       “Good”
    3. C.
       “Well”
    4. D.
       “Yes”