题目内容

在发球时,不允许双脚离地。

A. 对
B. 错

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列举出主裁判的职责?

The foundation of the word is called______

A. prefix
B. root
C. suffix
D. affix

The combination of root and combining vowel is ____

A. combining vowel
B. prefix
C. combining form
D. suffix

What does the word part “adren/o” mean?

A. salivary gland
B. thyroid gland
C. adrenal gland
D. parotid gland

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