单项选择题

Human beings have used tools for a long time, ______ they would not have been able to develop their intelligent so fast.

A．doubtlessly
B．therefore
C．otherwise
D．consequently
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单项选择题
The strong gust of wind was ______ send sheets of paper scattering everywhere in the room.
A．such as to
B．so as to
C．much as to
D．in order to
单项选择题
Though Mr. Ian's condition looks very serious, I believe with careful nursing, he will
A．pull back
B．pull up
C．pull through
D．pull off
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