单项选择题

All of the following are causes of being bitten by mosquitoes EXCEPT ().

A. carbon dioxide and other odors
B. sweat
C. the quality of your skin
D. heart and blood pressure medicine

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单项选择题
The five-year survey in Sweden revealed () of unnatural deaths were associated with alcohol.

A. 29%
B. 11%
C. almost 50%
D. 56%
单项选择题
What does the egg stand for().

A. The symbol of peace.
B. The good wishes given by the parents to their children.
C. The reoccurrences of good luck.
D. The start of new life.
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