每天日照长度短于某小时才能开花结果的作物，称为（）
A、长日照作物
B、短日照作物
C、中性作物
D、其他作物
参考答案：B
用所给动词的适当形式填空。
1. By the end of last year, the famous writer _____ (write) 20 books.
2. When we _____ (get) to the cinema, the film _____ (on) for half an hour.
3. Before he _____ (come) here, he _____ (live) in Britain for ten years.
4. By the time I _____ (arrive), she _____ (leave).
5. I _____ (learn) a lot of English songs before I _____ (be) ten.
惊风八候中，“搐”是指（）
A.肘臂伸缩
B.十指开合
C.手如挽弓
D.惊搐不止
E.手足头身动摇
