They returned home after a long journey,

阅读下面短文，用括号内所给动词的适当形式填空(必要时可加情态动词或助动词)。

       It was getting dark. Some children and two Canadian women were still skating near a big hotel.

They   1   (have) a great time. A boy said to his friends, "I   2   (not skate) on a real lake so far. It's

wonderful! Look! I   3  (fly)!" Suddenly the ice broke. One of the boys fell into the river. The children

shouted, "Help! Help!" They didn't know what they   4   (do).

       My mother is very kind and easygoing. She helps me a lot. I   5   (take) good care of my daily life

by her. When I am in trouble, she always encourages me     6   (face) my difficulties. With her help, I

have become a top student in my class already. I believe she   7   (be) proud of me in the near future.

病历摘要：某女性患者，45岁，白带多，性交后出血已3个月，检查宫颈呈靡粒状外观，接触性出血。

关于宫颈糜烂电熨治疗，哪些是正确的（）

A.治疗前无需宫颈刮片性细胞学检查

B.有急性生殖器炎症时不能作电熨

C.治疗时间在月经干净后3～7天内进行

D.术后 * * 可有大量排液

E.术后两周脱痂时可有少许出血

诊断膀胱癌的最好方法是（）

A.膀胱造影

B.直肠膀胱双合诊

C.膀胱镜检查

D.尿液脱落细胞

E.尿常规

某PIX 525防火墙有如下配置命令，该命令的正确解释是（）。

flrewall(conflg)#global(outside) 1 61.144.51.46

A.当内网的主机访问外网时，将地址统一映射为61.144.51.46

B.当外网的主机访问内网时，将地址统一映射为61.144.51.46

C. 设定防火墙的全局地址为61.144.51.46

D. 设定交换机的全局地址为61.144.51.46

在学校教育中，起关键作用的是（ ）。

A．教学媒体

B．教师

C．学生

D．教学环境