短语辨析
(名词、动词、形容词、副词、代词和介词)
形容词
1. Only five years after Steve Jobs' death, smartphones defeated ________PCs in sales.
A.controversial B.contradictory
C.confidential D.conventional
2. The disappearance of dinosaurs is not necessarily caused by astronomical incidents. But ________explanations are hard to find.
A.alternative B.aggressive
C.ambiguous D.apparent
A 考查形容词辨析。alternative“可供选择的”,符合句意。aggressive好斗的,有进取心的;ambiguous模糊不清的;apparent显然的。句意:恐龙的消失并不一定是由天文事件引起的。但是很难找到可供选择的解释。
4. —I want to see Mr White. We have an appointment.
—I'm sorry, but he is not ________ at the moment, for the meeting hasn't ended.
A.busy B.active
C.concerned D.available
D 考查形容词。根据回答“…for the meeting hasn't ended.”可知怀特先生现在没空,故选D项。available可表示“(人)有空的”。busy忙碌的;active活跃的;concerned担忧的。句意:“我想见怀特先生。我们有一个约定。”“很抱歉,此刻他没空,因为会议还没有结束。”
连词与介词
5. —Peter, please send us postcards ________ we'll know where you have visited.
—No problem.
A.but B.or C.for D.so