(判断题)7: 在正压射孔中，残渣不能及时冲出，只有在试采时才能被带出，因此污染严重且不能及时清除。 A: 错误 B: 正确 ...

(单选题)6: If the corporation wants to increase its _________, it must reduce operating expense. A: profit B: interest C: income income D: cost ...

(单选题)20: —This is a birthday present for you.— _________ A: What's the problem? B: Oh, what a surprise! C: I can't help it! D: It's a pleasure. ...

(单选题)14: —What do you do? —_________ A: What do you do? B: Fine, thank you. C: I'm a college student. D: I do well in my studies. ...

(单选题)2: —Let’s go to the library this afternoon. —__________ A: Yes, that’s right. B: No, I can’t. C: What about you? D: That’s a good idea. ...

(单选题)16: —Could you speak more loudly?—_______________. A: It's a good line B: The line is bad C: I can hear you D: You can't hear me ...

(单选题)4: Miss Wang wanted to know _______for the film. A: why was he late B: why is he late C: why he is late D: why he was late ...

(单选题)18: The workers are busy ______ models for the exhibition. A: to make B: with making C: being making D: making ...

(单选题)12: —How do you do? —__________ A: Fine, thank you. B: How do you do? C: Not too bad. D: Very well. ...

(单选题)6: When Lily came home at 5 p.m. yesterday, her mother ______ dinner in the kitchen. A: cooked B: was cooking C: cooks D: has cooked ...