单项选择题

As there was no road, the travelers ____ up a rocky slope on their way back.

A．ran
B． hurried
C． scrambled
D． crawled
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单项选择题
Many people believe that science helps society to progress through（）

A．applied knowledge.
B．more than one aspect.
C．technology only.
D．the use of machines.
单项选择题
He listened hard but still couldn’t what they were talking about.
A．make over
B．make up
C．make upon
D．make out
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