81________ is announced in today"s paper, they have succeeded in solving many problems in accordance with the new theory.
A.It
B.That
C.What
D.As
开始考试练习点击查看答案82Gun control is a subject ______ Americans have argued for a long time.
A.of which
B.with which
C.about which
D.into which
开始考试练习点击查看答案83Green tea, ________ many experts suggest, should be drunk regularly to improve health.
A.which
B.where
C.when
D.as
开始考试练习点击查看答案84This is the very diamond ring________I have been looking for in the past months.
A.where
B.which
C.that
D.in which
开始考试练习点击查看答案85We hope the measures to control house prices,____ are taken by the government, will succeed.
A.which
B.that
C.what
D.as
开始考试练习点击查看答案86She decided to combine her new idea __________ she gained watching the black dancing in the street with the original one.
A.what
B.where
C.from which
D.which
开始考试练习点击查看答案87They talked for about an hour of things and persons _____ they remembered in the school.
A.which
B.that
C.who
D.whom
开始考试练习点击查看答案88I"ve heard that our boss is to arrange me for a trade talk with another company, ________ I can"t go picnicking with you on Sunday.
A.in this case
B.in that case
C.in which case
D.in case
开始考试练习点击查看答案89It rained heavily outside，________made us stay at home all day.
A.which
B.why
C.that
D.what
开始考试练习点击查看答案90He talked about the teachers and schools __________ he had visited.
A.which
B.who
C.that
D.what
开始考试练习点击查看答案