_____ the students were hearing the exci_爱下问搜题

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问题选择题

_____ the students were hearing the exciting news![ ]

A. How happily

B. What a fun

C. What pleasure

D. How pleased

答案

答案：D

选择题

若集合P={x|x≤4，x∈N^*}，Q={x|x＞1，x∈N^*}，则P∩Q等于（　　）

A．{1，2，3，4}

B．{2，3，4}

C．{2，3}

D．{x|1＜x≤4，x∈R}

填空题

TOSI锅炉磨煤机一次风量（）t／h时报警，（）t／h时保护跳闸。