单项选择题

We should make a clear ______ between the two scientific terms for the purpose of our discussion.

A．distinction
B．discrimination
C．deviation
D．separation
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问答题
describe the charts briefly, 2) interpret the causes of it, and 3) give your point of view. Your composition should be more than 150 words. You should write your composition neatly on ANSWER SHEET 2.
单项选择题
Even though leather gloves are much more expensive, they are more ______ than vinyl.
A．resistant
B．persistent
C．permanent
D．durable
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