单项选择题

A) assure C) promise
B) ensure D) guarantee

A．assure
B．ensure
C．promise
D．guarantee
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单项选择题
A) cried C) saidB) asked D) shouted
A．cried
B．asked
C．said
D．shouted
单项选择题
In the second paragraph the author uses an analogy (类比) that assumes that general principles are similar to______.
A．the wood
B．technical details
C．the trees
D．fixed laws
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