单项选择题

According to the passage, one of the first expected benefits from cloning technology may be in.（）

A．the treatment of heart attacks
B．the bearing of babies
C．the cure of blood diseases
D．the detection of gene-related diseases

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单项选择题
To help students develop their critical thinking, professors mainly teach them （）.

A．choice of their premises
B．the way to think independently
C．skills of drawing conclusions
D．different kinds of argument
单项选择题
The word shaky (Line 1, Para 3) most probably means （） .

A．creative
B．firm
C．false
D．weak
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