单项选择题

They have developed techniques which are () to those used in most factories.

A. more
B. better
C. greater
D. superior

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单项选择题

A. that was better than the other girls
B. that was better than that of the other girls
C. that were better than that of the other girls
D. that were better than those of the other girls

单项选择题

The theory is of great importance () the hotter a boby is, the more energy it radiates.

A. that
B. when
C. which
D. what