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.

　　A. is

　　B. was

　　C. has been

　　D. had been

　　3.—Do you know Jack well?

　　—Certainly. We ______ friends since ten years ago.

　　A. were

　　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.

　　A. so

　　B. such

　　C. so a

　　D. such a

　　6.I do not wish to ______ your sincerity.

　　A. reflect

　　B. reflect on

　　C. reflect in

　　D. reflect about

　　7.The smog is due ______ invisible gases， mostly from automobile exhaust.

　　A. from

　　B. to

　　C. for

　　D. with

　　8.______ is accepted as true is relatively， and not absolutely， true.

　　A. It

　　B. That

　　C. What

　　D. That it

　　9.How can you keep the machine ______ when you‘re away?

　　A. run

　　B. to run

　　C. running

　　D. being run

　　10.Because of his degree， he refused to do ______ he thought “l(fā)ow” work.

　　A. that

　　B. what

　　C. which

　　D. who