It seems that Reader's Digest is a magazine popular with______.
A. people of all ages
B. teenagers
C. school teachers
D. elderly readers
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我国山区面积约占全部国土面积的（）。
A. 40546
B. 40577
C. 40545
D. 40606
According to the author, well-chosen words can give people______.
A. hope, courage, and ideas
B. confidence, determination, and strength
C. pleasure, knowledge, and encouragement
D. entertainment, information, and power
The figures given in the third paragraph suggest that______.
Americans are dependent on cars
B. cars consume a lot of money
C. Americans need losing weight
D. excess of fat can be source of energy
The author implies but does not say that______.
A. the way to knowledge is through specialization
B. one has to know everything to be successful
C. success depends not so much on natural ability as it does on effort
D. success in one's profession is least important in one's life
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