（1）______ is accepted as true is relatively， and not absolutely， true.
A. It
B. That
C. What
D. That it
（2）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
（3）When I was young， my grandmother told me that the earth ______ round.
A. is
B. was
C. has been
D. had been
（4）How can you keep the machine ______ when you‘re away？
A. run
B. to run
C. running
D. being run
（5）Because of his degree， he refused to do ______ he thought “low” work.
A. that
B. what
C. which
D. who
（6）These hamburgers ______ nice， so they have all ______ out.
A. taste， sell
B. are tasted， sell
C. taste， been sold
D. are tasted， been sold
（7）—Do you know Jack well？
—Certainly. We ______ friends since ten years ago.
A. were
B. have made
C. have become
D. have been
（8）The smog is due ______ invisible gases， mostly from automobile exhaust.
A. from
B. to
C. for
D. with
（9）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
（10）I do not wish to ______ your sincerity.
A. reflect
B. reflect on
C. reflect in
D. reflect about