词汇运用。

1.              (没有一个) of us has been to the USA.

2.  Our solar system is only a            (部分) of the galaxy.

3.  Are we            (孤独的) in the universe?

4. Their light has traveled several years to            (到达) us.

5.  I hope to meet a            (真正的) astronaut one day.

6.  We are good friends because we like the            (相同的) things.

7.  What            (外国的) language have you studied recently?.

8.  People in China and            (国外) have given money to help poor children.

9.  He stopped going to school a            (少数) years ago.

10.  That            (听起来) interesting.

患者，女性，20岁，因"全身皮疹伴表皮破溃2天"就诊。患者1周前出现上呼吸道感染，多次给予多种抗生素及退热药物，2天前躯干部出现红色点状皮疹，迅速增多、增大，伴大小不等水疱、破溃。查体：T37.6℃，口腔黏膜轻度糜烂，躯干、四肢弥漫性暗红色斑片，伴大小不等松弛性水疱、大疱，尼氏征（+），部分水疱破溃见表浅糜烂面，水疱及破溃面积约占体表面积的40%。

根据其临床表现，诊断考虑为（）

A.中毒性表皮坏死松解症

B.重症多形红斑

C.剥脱性皮炎

D.天疱疮

E.家族性慢性良性天疱疮