消防部队在执行抢险救援任务过程中，要在事发单位的统一领导下，根据具体情况采用适宜的指

Going to an American friend’s house is very exciting. But you must remember to be polite.

When to arrive  If your friend tells you to come “ around 3:00”, that means you can go there a little bit after 3:00. But usually it is a good idea to arrive at the right time.

What to bring   It’s nice to bring something to your friend’s house. This could be a box of chocolates for you two to share, or maybe a movie that you can watch together. You can also bring some flowers. A little gift is a nice way to show your friend that you are excited to be at his house.

How to greet   When you visit your friend’s house, you may also meet his parents. You should tell who you are and they may tell you their names. As a child, I went to visit my friend Paul. I call his parents by their first names John and Mary. But now I know it is more polite to call them Mr or Mrs Smith. You can also call them Madam or Sir.

It is a cool thing to visit a friend’s house. Be polite to your friend and your friend’s parents, and you will be invited again!

小题1:If you are told to get to an American friend’s house around 5:00pm, it is polite to arrive at ______ pm.

A．5:02

B．4:50

C．4:30

D．6:00小题2:If you go to a friend’s house, you’d better take _____ with you.

A．some money

B．some flowers

C．a car

D．a knife小题3:When the writer want to visit his friend Paul, he called his friend’s father ___.

A．Mr Smith

B．John

C．Mary

D．Mrs Smith小题4:The passage mainly tells us ______.

A．when to arrive at your friend’s home

B．how to greet people

C．what to bring to your friend

D．how to be a good visitor小题5:The passage may be from ______

A．a notice on the wall

B．a letter to a friend

C．an article in a magazine

D．a news story in a paper

患者，女性，17岁，月经未来潮， * * 未发育，因四肢无力查血钾2.2mmol/L，血压150/90mmHg。

该症与增生性醛固酮增多症的区别正确的是（）。

A.ACTH减低

B.皮质醇增多

C.醛固酮减低

D.尿钾排泄减少

E.血17-羟孕酮减少

简述绝对剩余价值生产和相对剩余价值生产的关系。

训诂学是一门什么样的学科？

石决明煅制后增强了( )

A．收湿敛疮作用
B．固涩收敛、明目制酸作用
C．止血作用
D．解毒止痒作用
E．散瘀止痛作用