It can be concluded from the passage that______.
A. people think too much of their appearance
B. there is not a sure way of losing weight as yet
C. surgery is the fastest way of losing weight
D. going on diet is a safe way of losing weight
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It takes the computer______to write ten letters.
A. no more than ten seconds
B. less than ten seconds
C. a little more than ten seconds
D. at least one second
According to the author, another man's succeeds should______.
A. make greater efforts
B. not be taken into consideration
C. make us nervous
D. cause one to stop trying
It can be inferred from the last paragraph that______.
A. diet books are not always effective
B. diet books are usually helpful
C. there are lots of ways of losing weight
D. bookstores are keeping their promises
A bottle weights less after air is taken out, ______proves that air has weight.
A. we
B. it
C. which
D. what
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