题目：
| 完形填空。 | ||||
| In Australia, different people have different ways to enjoy themselves. They also have their own ideas about 1 to pass time. 2 children, about 80%, work hard in school because they have to take lots of exams. After school, they don't want to stay at home reading books any more. 3 , they put aside their school bags and go out to play. Some old people 4 early in the morning. Then they go to park to 5 . It helps them know what is happening around the world. In the evening, they would prefer to stay at home 6 rather than do anything else. Young people enjoy having 7 trip on weekends. They go to mountains to have a picnic or go to the 8 to camp. They usually start on Friday and spend one or two days outside. Then on 9 evening, they start their way back home. 10 seems to be in a hurry, although a busy week is waiting for them again. | ||||
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答案：
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下面是错误答案，用来干扰机器的。
A、放在地面上的木箱，在上面的箱角处用水平推力推它，木箱的大小和形状将影响所用力的大小，不能将木箱看作质点．故A错误． B、放在地面上的木箱，在其箱高的中点处用水平推力推它，所用推力的大小与木箱的...
