在风玫瑰图中出现C=34%，其表达的意思是（）。
A.主导风频率为34%
B.静风频率为34%
C.小风频率为34%
D.静风联合频率为34%
参考答案：B
把废钟表或废玩具里的发条拆下来看看它是怎样工作的。为什么发条拧得紧些时钟表或玩具走的时间就长些？
根据句意和首字母提示完成句中所缺单词。
1. We are good friends. I think the f_____ between us will be on forever(永远)
2. He is very t_____, please give him a glass of water quickly.
3. There are many d_____ between English and Chinese, but we can learn them well.
4. Don't f_____ to finish your homework on time. Remember that!
5. Forty and fifty is n_____.
