填空题

A the nucleus of a cell
B cloned human beings
C a human being in two years
D a law to ban human cloning
E a report on human cloning
F heavy media coverage
Within ten years scientists will probably have______.

【参考答案】

B
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单项选择题
When a bicycle coasts downhill, it ().

A. runs along the hillside
B. does not need any further power
C. runs freely to all directions
D. does not meet with air resistance
填空题
C
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