61.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

　　62.When I was young， my grandmother told me that the earth ______ round.

　　A. is B. was C. has been D. had been

　　63.—Do you know Jack well?

　　—Certainly. We ______ friends since ten years ago.

　　A. were B. have made C. have become D. have been

　　64.These hamburgers ______ nice， so they have all ______ out.

　　A. taste， sell B. are tasted， sell C. taste， been sold D. are tasted， been sold

　　65.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

　　66.I do not wish to ______ your sincerity.

　　A. reflect B. reflect on C. reflect in D. reflect about

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

　　A. from B. to C. for D. with

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

　　A. It B. That C. What D. That it

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

　　A. run B. to run C. running D. being run

　　70.Because of his degree， he refused to do ______ he thought “low” work.

　　A. that B. what C. which D. who

　　71.She hasn‘t decided with ______ she should first make contact.

　　A. who B. whom C. how D. which

　　72.That is ______ we differ.

　　A. that B. where C. what D. whether

　　73.Another worry is that telecommunication systems may isolate people ______ each other.

　　A. from B. for C. with D. to

　　74.If I ______ in your place， I wouldn‘t trouble him.

　　A. were B. had been C. could be D. was to be

　　75._______ the moon moves round the earth is well known to all of us.

　　A. That B. What C. When D. As

　　76.I doubt _______ they can complete the bridge ahead of time.

　　A. whether B. that C. why D. what

　　77.The question he asked was _______ I come here.

　　A. that B. how C. what D. because

　　78.Too many people are indifferent _______ others‘ troubles.

　　A. with B. to C. of D. about

　　79.Let us see how dictionaries are made and how the editors _______ definitions.

　　A. lead to B. arrive at C. reach for D. approach to

　　80.Shanghai is the place _______ I was born.

　　A. on which B. in which C. when D. that