4bar辅汽母管的用户有哪些？
参考答案：
（1）热网；
（2）输煤暖汽；
（3）翻车机区加热；
（4）食堂及澡堂。
The parents suggest_________in the hotel room but their kids were anxious to camp out
during the trip. [ ]
A. sleep
B. to sleep
C. sleeping
D. having slept
对接触了麻疹的易感儿，自接触之日起至少应隔离
A．7天
B．14天
C．21天
D．28天
E．35天
