1.The computer of this kind can work ______ than the one of that kind.
A. hundred of times faster
B. a hundred time faster
C. hundred times faster
D. hundreds of times faster
2.When I was young， my grandmother told me that the earth ______ round.
C. has been
D. had been
3.—Do you know Jack well?
—Certainly. We ______ friends since ten years ago.
B. have made
C. have become
D. have been
4.These hamburgers ______ nice， so they have all ______ out.
A. taste， sell
B. are tasted， sell
C. taste， been sold
D. are tasted， been sold
5.We now have ______ fast ways of traveling that this big ocean seems to have grown smaller.
C. so a
D. such a
6.I do not wish to ______ your sincerity.
B. reflect on
C. reflect in
D. reflect about
7.The smog is due ______ invisible gases， mostly from automobile exhaust.
8.______ is accepted as true is relatively， and not absolutely， true.
D. That it
9.How can you keep the machine ______ when you‘re away?
B. to run
D. being run
10.Because of his degree， he refused to do ______ he thought “low” work.
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