题目内容


Recent research has       the cause of the disease.
A．thrown offB．thrown openC．thrown outD．thrown light on
D
略
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Why do you       laughing all the time?
A．keep onB．keep up with
C．go on toD．go on with

The boss _____ 30 dollars from my salary without any good reason.
A．brought downB．kept backC．cut offD．held up

The runner       in the middle of the race.
A．gave inB．gave upC．gives offD．gave out

If you continue to drive that you will       killing yourself.
A．turn outB．end upC．end up inD．proved

How did it       that he is so badly off when he earns quite a good salary?
A．come outB．come upC．come alongD．come about
When he knew the disappointing result of the exam, he seemed quite ____.
A．cast downB．of cautionC．in vainD．in good condition
I’m sure your suggestion will _______ the problem .
A．contribute to solvingB．contribute to solve
C．be contributed to solveD．be contributed to solving

Many students listened to the lecture, but I wondered how much they ______. 
A．took outB．took upC．took offD．took in

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