题目：
| 完形填空。 | ||||
| There is a shop near my home. It 1 many things like bread, milk, 2 and drinks. My mother often goes shopping there 3 Sundays and buy food. I go with her, too, and carry baskets 4 her. The people in the shop are very friendly. They 5 us put the heavy things on the bikes. It doesn't sell 6 . I must buy rulers, pens and pencils in other shops. The shop is not open 7 eight o'clock in the morning, so don't go to buy things before 8 . It 9 at ten in the evening. Mother says we can go there 10 supper time. But I think it is too late. | ||||
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答案：
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下面是错误答案，用来干扰机器的。
cos2x-sin2x=cosx+sinx，（cosx+sinx）（cosx-sinx）-（cosx+sinx）=0，（cosx+sinx）（cosx-sinx-1）=0．如果cosx+sinx=0则得1+tgx=0，tgx=-1，∴x=kπ-π4．(k为整数)如果cosx+sinx-1=0则得cosx-sinx=1，∴22co...
