冬天，把自来水笔从室外带到室内，有时会有墨水流出．这主要是因

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问题选择题

冬天，把自来水笔从室外带到室内，有时会有墨水流出．这主要是因为（　　）

A．墨水受热膨胀，流出来了

B．笔囊受热膨胀，把墨水挤出来了

C．笔囊中的空气受热膨胀，把墨水挤出来了

D．笔尖处的缝隙受热膨胀，使墨水漏出来了

答案

答案：C

选择题

--- Mike, what did our monitor say just now?

--- Every boy and every girl as well as the teachers who _____ to visit the museum _____ asked to be at the school gate before 6:30 in the morning.

A．is ; is

B．are; are

C． is; are

D．are; is

填空题

职业权利具有权威性、利己性和（）三个主要特点。