题目内容

接通延时定时器用于单一时间间隔的定时（）

A. 对
B. 错

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[音频]There are _______ people in Li Min’s family.

A. four
B. five
C. six

Her grandmother is a _______.

A. retired doctor
B. retired nurse
C. housewife

Her father is a teacher in a _______.

A. high school
B. middle school
C. college

Her cousin likes _______.

A. singing
B. dacning
C. both A and B