【题目】It puzzles the scientists _____ some mammals produce their young _____ others lay eggs．

A．that; while B．what; while

C．that; as D．what; as

【题目】With the quality-oriented education (素质教育) being carried out, teachers won’t ___ too much importance to students’ grades.

A.involve B.attach C.display D.stress

【题目】Professor Smith will come here to give a speech．All the preparations must be _____ before 5 o’clock．

A．in time B．in sight C．in place D．in control

【题目】People were puzzled _______ they read the book.

A. the first time B. at the first time

C. for the first time D. at first

【题目】--- I can’t go for a picnic with you because something urgent has _____．

---What a shame!

A．come up B．cleared up C．stayed up D．ended up

【题目】A strange girl entered the room and told me a story of her own, _____ I suspected the truth．

A．that B．which C．of which D．at which

【题目】Our class _______ forty-five students, in other words, forty-five students ______ our class.

A. consists of, are made up of.

B. is consisted of, make up.

C. consists of, make up.

D. is consisted of, are made up of.

【题目】If our marketing plan succeeds, we _______ the sales by thirty percent next year.
A.would increase
B.will increase
C.would have increased
D.will be increasing

【题目】______ we guess, the man wearing dark-glasses is a detective for this murder case.
A.As long as
B.As well as
C.As far as
D.As soon as

【题目】— Did you have a good time last night?
— Yes, I did. It was a long time since I _____ myself.
A.haven't enjoyed
B.didn't enjoy
C.enjoy
D.had enjoyed
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