A.are not discussed
B.have not been discussed
C.is not being discussed
D.has not been discussed
答案 D
解析 考查主谓一致。when and where to go for the exciting onsalary vacation是后一分句的主语,and虽然是连接两个词,但是接的是同一个不定式,故作为单数概念理解,所以谓语动词用单数形式,排除A、B两项;由语境及yet可知,应选D项。
7.Experts tell us that teenagers often smoke to copy their peers(同龄人)and others whom they see________.
A.smoking B.to smoke
C.to be smoking D.smoked
答案 A
8.Alexander tried to get his work ________ in the medical circles.
A.to recognize B.recognizing
C.recognize D.recognized
答案 D
解析 句意为:亚历山大试图让他的工作在医学圈内得到认可。宾语work和recognize之间存在被动关系,所以用过去分词作宾语补足语。
9.Either you or one of your students ________ to attend the meeting that is due tomorrow.
A.are B.is C.have D.be
答案 B
解析 句意为:要么你,要么你的一个学生得去参加明天要开的会议。either...or...连接两个主语,按就近原则来确定谓语动词的单复数。one of your students作主语,谓语动词应用单数形式。故B项正确。
10.Computers and mobile phones,though they are indeed making our life ________and more ________,have reduced the need for facetoface communications.
A.easily;efficient B.easier;efficient
C.easy;efficiently D.easily;efficiently
答案 B
解析 考查形容词。从状语从句的句子结构来看,make后为复合宾语,宾语补足语应为形容词。故选B项。A、C、D三项均有副词。