高层民用建筑中防火墙的耐火级限应为()。A．3h B．4h C．3.5h D．2.5

There ____________ some juice in the bottle.[ ]

A. are

B. is

C. do

D. /

我国历史曾出现过几次民族融合的高潮，实现民族融合的基本因素是[ ]

A．封建统治者采取促进民族融合政策

B．少数民族大量的内迁

C．经济繁荣，社会生产的不断进步

D．各民族之间的长期交往

患者，男，19岁，右下后牙进食时疼痛并伴有出血1个月余。检查：左下6残冠，见红色的肉芽组织充满整个龋洞并达咬合面，探诊出血，温度测试引起持续性疼痛，叩（±），松（-）；左下7远中龋损，探诊有酸软感；左下8低位阻生，龈瓣中度充血。X线片示左下6髓底完整。

主诉牙适宜的治疗方案为（）

A.根管治疗后充填

B.根管治疗后冠修复

C.塑化治疗后充填

D.塑化治疗后冠修复

E.拔除患牙

用所给词的适当形式填空，每空不限一词。

1. I think it's _________(use) to talk with him. It's difficult to change his mind.

2. The terrible snowstorm kept them from _________(ski) last week.

3. My uncle will come back from London. I'm waiting for his _________(arrive).

4. _________(wolf ) eat smaller animals when they are hungry.

5. _________(luck), he was hurt badly.

6. His grandpa was lucky enough to stay _________(live) during the earthquake.

7. Lushan is so beautiful that he wants to go there for the _________ (two) time.

8. We should encourage people _________ (not cut) trees any more.

9. I _________ (drive) to Beijing when my car broke down.

10. The young trees _________ (die) soon if you don't water them in time.

二十八初孕妇，孕33周，自觉乏力、食欲差，伴恶心、呕吐2周，小便深黄色，皮肤瘙痒5日。查体：体温37.5℃，血压130/90mmHg，神志清，皮肤巩膜黄染，躯干及四肢皮肤可见散在出血点，肝肋下未触及，胎头入盆，胎心140次／分。

若ALT542U/L，总胆红素85.5μmol/L，结合胆红素46μmol/L，尿胆红素（+），HBsAg（+），本例最可能的诊断是（）

A.妊娠高血压疾病引起的肝损害

B.妊娠剧吐

C.妊娠急性脂肪肝

D.妊娠合并病毒性肝炎

E.妊娠肝内胆汁淤积症