单项选择题

What are the man and the woman talking about（）

A. Genetic engineering.
B. Genetic screening.
C. Genetic food.
D. Eugenics.

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Which activity of the Union is not mentioned by the speaker（）

A. Raising money for good causes.
B. Running a newsagent.
C. Providing cheap tickets.
D. Helping with accommodation.
单项选择题
Which color does Americans often use to express heat（）

A. Pink.
B. Red.
C. Blue.
D. Black.
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