肠炎（） A．血清K+↑  B．血清Cl-↑  C．血清Na+↑  D．血清C1-↓

On March 23, many people took part in “_________ Lights” activity to help save energy.

A．Turn off

B．Show off

C．Take off

D．Put off

一早产儿，第二产程4小时，有窒息史。第2天烦躁不安，拒乳，突然尖叫、呕吐、阵发性青紫，面部抽动，拥抱反射消失。患儿住院后，进一步做相关检查，进行评估，诊断为产伤性颅内出血，产伤性颅内出血最常见的类型是（）.

A.脑室周围-脑室内出血

B.硬膜下出血

C.脑实质出血

D.小脑出血

E.原发性蛛网膜下腔出血

用所给词的适当形式填空。

1. He ______ (go) to Beijing on his summer holiday next year.

2. The weather is quite ______ (wind) in Jinan in fall.

3. The students are busy ______ (do) some exercises.

4. That's a ______ (hard) question.

5. There are four ______ (season) in a year.

气体灭火系统同一防护区内的预制灭火系统装置多于1台时，必须能同时启动，其动作响应时差不得大于2s。（）

百度网盟的定向方式有（）

A.地域定向

B.关键词定向

C.到访定向

D.网站定向