单项选择题

A．Husband and wife.
B．Old classmates.
C．Desk mates.
D．Members of the school football team.
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单项选择题
A．Mike is a good leader.B．Mike makes a lot of plans.C．Mike gets things done.D．Mike does what others want.
A．Mike is a good leader.
B．Mike makes a lot of plans.
C．Mike gets things done.
D．Mike does what others want.
单项选择题
Why does the author mention the example of Pasteur
A．To predict that the secret of cancer will be disclosed in a decade.
B．To indicate that the prospects for curing cancer are bright.
C．To prove that cancer will be cum in fifty to sixty years.
D．To ware that there is still a long way to go before cancer can he conquered.
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