问题
选择题
cos(-
|
答案
cos(-
)=cosπ 6
=π 6 3 2
故选D．
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cos(-
|
cos(-
)=cosπ 6
=π 6 3 2
故选D．
| 选句子，补全对话。 | |
John: I like apples. ________________________________ Mike: Bananas are my favourite. They are tasty. But ________________________________ They are sour. Amy: I like carrot juice. It's fresh and healthy. What about you, Sarah? Sarah: I like beef. But I'm heavy now. ________________________________ |