张力性气胸的表现是（） A.反常呼吸 B.胸膜损伤后，空气进入胸膜腔异常通道自动闭合

属于半极性溶剂的是

A.液体石蜡

B.丙三醇

C.丙二醇

D.苯甲酸钠

病历摘要：心血管系统药物的药理作用、不良反应.

有关HMG-CoA还原酶抑制剂的叙述中正确的是（）.

A.HMG-CoA还原酶抑制剂是目前临床上最常用的一类降脂药

B.HMG-CoA还原酶抑制剂亦被称为他汀类药物

C.洛伐他汀是一种非活性前体药药物，在体内水解为活性产物而发挥作用

D.HMG-CoA还原酶抑制剂与消胆胺合用可增强降血脂作用

E.HMG-CoA还原酶抑制剂主要降低胆固醇和低密度脂蛋白，亦可适度升高高密度脂蛋白

Many of us already know about several American superstitions（迷信）. Having a black cat cross your path, walking under a ladder, and breaking a mirror are all bad luck. In addition, there are many other superstitions that are worth knowing. Understanding them will keep you safe from evil spirits —if you believe in such things —and impress your American friends when you mention them.

Like the superstitions in other cultures, American superstitions often involve the things important in daily life, such as health, numbers, and marriage. For example, have you ever had a cough that would not go away? According to one American superstition, you should take a piece of your hair and put it between two slices of buttered bread. Next, feed this hair sandwich to a dog and say, “Eat well, you hound, may you be sick and I be sound.” This will trick the evil spirits and help your cough. It will also raise some eyebrows if you try it.

In American superstitions, the number three is very important. Often, Americas will say, “All things come in threes.” Three is lucky because it represents the traditional family: mother, father, and child. Therefore, gifts, letters, and guests will often arrive at your home in groups of three. However, it is also possible for bad events, like accidents and funerals, to come in threes as well.

Another time people pay attention to superstitions is when they get married. During a wedding, brides must wear or carry “something old, something new, something borrowed, and something blue”. The old and borrowed things will bring luck to the person who gives them to the bride. The new and blue things will bring good fortune to the bride herself. The next time someone you know is getting married, be sure to recite this phrase.

As it would be unlucky to discuss one more superstition, we will wind things up here. Keep your fingers crossed, and stay lucky!

小题1:The passage is most probably entitled        .

A．American’s Bad Luck

B．Cross-culture and Superstitions

C．American Superstitions

D．Daily Life in Superstitions小题2:The underlined sentence in the second paragraph “It will also raise some eyebrows if you try it.” means        .

A．when you try it, the dog will raise its eyebrows.

B．you will make people surprised when you try this trick

C．only if you raise your eyebrows can the trick work

D．you will believe in the trick after you try it小题3: In American’s view, the number three is a(n)         number.

A．lucky

B．unlucky

C．special

D．ordinary小题4: On the wedding, the bride often uses old and borrowed things so as to          .

A．save some money for the wedding

B．bring good luck to the people who give them to the bride

C．give the good luck to the bride herself

D．pass the bad luck to others小题5: After reading the passage, we may feel it is written in a         tone.

A．formal

B．serious

C．humorous

D．critical

With respect to major bond markets around the world, which of the following statements is most accurate

A. Investors in one country that acquires bonds issued by the government of another country are believed to be risk-free.
B. The factors that affect yield spreads in the U. S. are different than the factors that affect yield spreads in other countries and between countries.
C. An investor in one country that buys bonds denominated in the currency of another country has unknown cash flows in the investor's domestic currency.

千斤顶是属于（）动的起重工具。