单项选择题

Which of the following statements is NOT true

A. It is never too late to take a flu shot.
B. One should sneeze into his hands.
C. Wearing more clothes is not preventive.
D. One should stay at home if he is sick.
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单项选择题
The message the writer attempts to convey throughout the passage is that （）

A. the Oroumieh Lake is in danger< br>B. the home to migrating animals is vanishing< br>C. humans’ behavior is harmful to nature< br>D. local tourism has been hurt
单项选择题
Sea urchins that have lived for a very long time（）

A. lose their ability to reproduce< br>B. do not suffer from the effects of ageing< br>C. start to show a slight reduction in size< br>D. are more easily attacked by other marine animals
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