下列耳穴中，位于三角窝的是（）。 A.眼 B.神门 C.耳尖 D.胃 E.降压沟

Cats are creatures of habit. They like to go to sleep about the same time every day and for a certain length of time. They seem to have a natural clock inside them that tells them when to sleep. Cats increase their regular sleep with occasional cat naps.(打盹). Some experts feel that humans can also get advantages from this habit. Cats nap help to build up energy in the body. They are also a good way to get rid of trouble! Since cats have the same moods as humans, some experts believe that people can improve their moods. People might become happier.

A number of famous people have copied cats by taking cat naps during the day. The naps would usually last from 15 to 30 minutes. Winston Churchill took cat naps. So did President Harry Truman, John F. Kennedy, and Lyndon B. Johnson. These famous men were known for their energy. They were also able to work long hours, often into the night. Napping was their secret.

小题1: From the passage we know that cats_________________.

A．donothaveregularsleep

B．haveoccasionalsleepaswellasnapseveryday

C．takenapstoaddtotheirregularsleep

D．takenapswhentheyarenothappy小题2:Naps usually last ________. 

A．threehours

B．lessthanhalfanhour

C．forty-fiveminutes

D．fifty-fiveminutes小题3: which of the following is NOT true?

A．Cats have the same moods as people.

B．Some famous people take cat naps.

C．Some people have full energy after they take cat naps.

D．People should take their naps secretly.小题4:How many famous men were known for their energy have been mentioned?

A．3

B．4

C．5

D．6小题5:Taking cat naps ________. 

A．willmakeapersonlazyandtired

B．isabadhabit

C．willmakepeoplefeelbetter

D．canhelppeopletobecomefamous

用NA表示阿伏加德罗常数，下列说法正确的是（  ）

A．0.1mol的Na₂O₂中含阴离子数是2N_A

B．14g乙烯和丙烯的混合物中含有的碳原子数为N_A

C．1mol的溴乙烷中含有N_A个Br­-

D．1mol乙酸和1mol无水乙醇反应生成的乙酸乙酯分子为N_A

有关MAC的概念，以下哪项错误（）。

A.MAC是在大气压下疼痛刺激时，50%病人（或动物）不出现体动或逃避反应时的肺泡中某吸入全麻药的浓度

B.吸入全麻药的强度可用MAC来表示

C.MAC愈大，麻醉效能愈强

D.MAC可用于表示麻醉药的剂量

E.MAC是评价吸入全麻药药理特性的重要参数

根据《关于禁止商业贿赂行为的暂行规定》，属于商业贿赂行为的包括（）

A.经营者在商品交易中向对方单位或者个人附赠现金

B.经营者在商品交易中向对方单位或者个人附赠物品

C.经营者在销售商品时在账外暗中以现金退给对方单位或者个人一定比例的商品价款

D.经营者在商品交易中向对方单位或个人赠送小额广告礼品

E.经营者为购买者以报销各种费用等方式，给付对方单位或个人财物

当边坡（），且层间接触面的倾向与边坡方向一致，有时由于水的下渗使接触面润滑，造成上部土质边坡沿接触面滑走的破坏。

A.上层为土，下层为基岩

B.上层为土，下层为土

C.上层为基岩，下层为基岩

D.上层为基岩，下层为土