为了安全，小朋友玩的气球应使用（）气体。
A、氢气
B、氦气
C、氮气
参考答案：B
肾炎（）。
A.意识障碍伴两眼向一侧凝视
B.意识障碍伴呼吸缓慢
C.意识障碍伴发热
D.意识障碍伴高血压
E.意识障碍伴心动过缓
______ you are supposed to do ______ you don't like a thing is ______ it. Don't complain.
A．That; what; change
B．When; that; to change
C．What; when; change
D．What; that; changing
