(单选题)2: 红色与黄色水果中（ ）含量较高。 A: 胡萝卜素 B: 维生素C C: 铁 D: 钾 E: 锌 ...

(单选题)46: The Red Cross is one of the organizations _____ is to help the sick and the needy. A: which purpose B: its purpose C: the purpose of it D: whose purpose ...

(单选题)40: We saw several natives advancing towards our party, and one of them came up to us, ____we gave some bells and glasses. A: to which B: to whom C: with whom D: with which ...

(单选题)34: ——Do you have anything to say for yourselves? ——Yes，there's one point ___we must insist on. A: why B: where C: how D: / ...

(单选题)28: In the dark forests ___, some large enough to hold several English towns. A: stand many lakes B: lie many lakes C: many lakes lie D: many lakes stand ...

(单选题)22: I____my wallet when I was shopping in the store. A: must have dropped B: should have dropped C: could drop D: ought to have dropped ...

(单选题)16: She____be ill because I saw her playing tennis just now. A: can't B: couldn't C: mustn't D: may not ...

(单选题)10: Anyone who wants to can call any timepiece a clock, but technically speaking, only _____ ones ring out the time actually deserve the name. A: whatever B: whenever C: wherever D: whichever ...

(单选题)4: By no means ____ our mistakes. A: we ought ignore B: we ought to ignore C: ought we ignore D: ought we to ignore ...

(判断题)38: LLC子层是局域网中的数据链路控制子层。 A: 错误 B: 正确 ...