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【題目】The public are________ about his claim that he has found a South China tiger，because they can't grow in such an area at all.
A.optimistic
B.favorable
C.skeptical
D.impressive

A. considering B. are considered

C. considered D. have been considered

A. about B. in

C. on D. of

【題目】Attention please，everybody！Please keep________ for a moment and let me take a photo.
A.calm
B.still
C.silent
D.quiet

A. distinguish; and B. distinguish; from

C. tell; and D. tell; apart

【題目】It looks as if they were going to ________us 3,000 dollars for the concert hall.
A.want
B.charge
C.demand
D.cost

A. the one B. where

C. that D. which

【題目】Only by constant study and changing our ideas can we________ to a changeable environment.
A.attend
B.adapt
C.agree
D.admit

【題目】-I'm sorry. That wasn't of much help.
-Oh, ______. As a matter of fact, it was most helpful.
A.sure it was
B.it doesn't matter
C.of course not
D.thanks anyway

A. that B. which

C. whether D. when