What is the author's opinion about the sudden change in teenage children？
A. Parents have no choice but to try to accept it.
B. Parents should pay still more attention to the change.
C. Parents should work more closely with school teachers.
D. Parents are at fault for the change in their children.
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How did the writer feel when she was walking home after work？
A. Cold and sick.
B. Fortunate and helpful.
C. Satisfied and cheerful
Disappointed and helpless.
Gould won her three Olympic golds when she was ______.
A. 15
B. 17
C. 22
D. 30
—How about your trip to Qingdao？ —It couldn't have been ______ . Sometimes I went swimming
A. so well
B. as bad
C. better
D. worse
The author tries to persuade readers to accept his argument mainly by ______.
A. pointing out the faults in what zoos do
B. using evidence he has collected at zoos
C. questioning the way animals are protected
D. discussing the advantages of natural habitats
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