(单选题)13: They tri ed to ____ hard plastics for metals in ma nufacturing machine parts. A: replace B: substitute C: take the place of D: give way to ...

(单选题)1: In social dancing, the participants dance for their own pleasure rather than for the ( ) of an audience. A: appreciation B: entertainment C: leisure D: temptation ...

(单选题)20: I didn't remember his name____________after I had greeted him. A: when B: as C: until D: while ...

(单选题)14: I have not found my book yet. In fact, I'm not sure ____________ I could have done with it. A: if B: whether C: how D: what ...

(单选题)21: Is this museum ____________you visited a few days ago? A: wherer B: that C: on which D: the one ...

(单选题)15: Liu Fang studies much better than ____________student in his class. A: any B: any other C: the other D: other ...

(单选题)3: The patient isn't out of danger. He is ____________than how he was yesterday. A: no better B: worst C: not worse D: not more ...

(单选题)22: It happened____________Lisa wasn't there at that time. A: whetherr B: if C: that D: why ...

(单选题)16: All examination paper____________, the teacher let the students leave. A: handing in B: having handed in C: to be handed in D: having been handed in ...

(单选题)10: ____________is a fact that English is accepted as an international language. A: What B: This C: That D: It ...