在等式a5•（-a）•（ ）=a12中，括号内的代数式应是（ ） A．a6 B．

气象站在观测和记录气温时，温度计是放在（　　）

A．室内

B．屋顶上

C．百叶箱

D．户外地上

吹风造型梳理时按照基本方法（）

A.交替使用

B.选择其一使用

C.随意发挥

D.梳理

皮部易与木部分离，气微，味苦，微辛，嚼之有刺喉感的是（）

A.木香

B.川木香

C.防己

D.远志

E.川贝母

阅读理解。

      When someone says, "Well, I guess I'll have to go to face the music", it does not mean he is planning to

go to a concert. It is something far less pleasant, like being called in by your boss to explain why you did this

or that, and why you did not do this or that. Sour (剌耳的; 拙劣的) music, indeed, but it has to be faced. 

     The phrase "to face the music" is familiar to every American, young and old. It is at least 100 years old.

Where did the expression come from? 

     The first information comes from the American writer James Fennimore Cooper. He said in 1851 that the

expression was first used by actors while waiting in the wings to go on stage. After they got their clue (提示,

暗示) to go on, they often said, "It's time to go to face the music." And that is exactly what they did-face the

orchestra (管弦乐队) which was just below the stage.

     An actor might be frightened or nervous as he moved on to the stage in front of the audience that might be

friendly or perhaps unfriendly especially if he forgot his lines. But he had to go out. So, "to face the music"

came to mean having to go through something, no matter how unpleasant the experience might be, because

you knew you had no choice.

     The other explanation comes from the army. Men had to face inspection (视察) by their leader. The soldiers

worried about how well they looked. Was their equipment clean-shiny enough to pass inspection? Still, the men

had to go out, and face the music of the band, as well as the inspection. What else could they do?

1. According to the passage, the word "music" means _____. [ ]

A. your boss's criticism (批评)

B. something unpleasant to be experienced

C. your leader's inspection

D. sour pop music

2. The phrase "to face the music" was first used by _____. [ ]

A. all the Americans

B. the American writer James Fennimore cooper

C. some American actors

D. the American orchestra

3. The phrase "to face the music" is also used to mean that soldiers were not willing _____. [ ]

A. to be examined about their equipment

B. to be found weak

C. to show themselves up in public

D. to be inspected by their leader

4. The passage is mainly about _____. [ ]

A. the meaning of the phrase "to face the music"

B. how to deal with something unpleasant

C. how to learn English phrase

D. how to go through difficulty

男性，患者，28岁，腹泻、便血、腹痛半年，血液检查，WBCl5．3×10／L，中性分叶核细胞72％，尿液检查正常，大便次数增多，粪便检查，脓性黏液便，血中带脓，有醒臭味，镜下WBC（++），BBC（++++），偶见夏科-菜登结晶。镜检无发现寄生虫及虫卵，最可能的是（）。

A.肠伤寒

B.阿米巴痢疾

C.细菌性痢疾

D.霍乱

E.胃肠炎