单项选择题

The word "rudimentary" (Line 3, Para. 2) is closest in meaning to______.

A．growing
B．undeveloped
C．necessary
D．uninteresting
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单项选择题
The author describes Thomas Moore as having been on the right track (Lines 1-2, Para. 3)to indicate that______.
A．the road to the market passed close to Moore's farm
B．Moore was an honest merchant
C．Moore was a prosperous farmer
D．Moore's design was fairly successful
单项选择题
According to the information in the second paragraph, an ideal icebox would______.
A．completely prevent ice from melting
B．stop air from circulating
C．allow ice to melt slowly
D．use blankets to conserve ice
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