单项选择题

The boss told us not to use more material than is necessary.

A．老板让我们按需要用料，别多用材料。
B．老板让我们不要多用材料，这没必要。
C．老板没让我们用必须要用的材料。
D．老板让我们不要用不必要的材料。
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单项选择题
According to the fourth paragraph, we know an Indian' s tribal name refers to his ______.
A．first name
B．second name
C．nickname
D．life name
单项选择题
According to the passage, Indian names were important because they ______.
A．described the character of a man
B．described the appearance of a man
C．were never used by other people
D．told us his profession
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