【单选题】You _____ come, but why didn't you appear? [ ]
【单选题】When the library doesn't have the magazine you need, you______.
A.
have to go to another library for it
B.
can ask the librarian to buy a copy for you
C.
can ask the librarian to go to other libraries for it
D.
can borrow it from another library but don't have to go there
【单选题】— Do you need to get there before ten? — No, I . [ ]
【简答题】在自由采食条件下,影响采食量的动物方面因素有哪些?
【单选题】You ________here tomorrow if you have something important to do. [ ]
【简答题】采食量对动物生产效率有何影响?影响动物采食量的主要因素有哪些?
【单选题】—Have you brought with you? We won’t have time to come back. —Don’t worry. All the things we need are here, in this big bag.
【简答题】农民每年都要收获大量的粮食,刚打下来的粮食堆放时会发热。分析: (1)请问这些热量来自细胞中的哪些成分? (2)该过程中的能量转换器是什么? (3)农民采取什么处理方式后再保存?该储存方式是减少了细胞中的哪种物质? (4)细胞中的蛋白质,糖类在这一处理过程中减少了吗? (5)水减少而有机物未减少,起作用的是细胞中的________。 (6)该过程说明植物细胞的生命活动受哪种因素影响?