星期六，杨过建议小龙女下周不工作陪他到某个山区旅游，小龙女拒绝了，自称她既支付不起旅行费用又因为没请假而将被扣工资。然而，费用很明显不是小龙女不愿陪杨过到那个山区旅游的真正原因，因为每次杨过邀请她参加一个没事先安排的旅行时，不管杨过计划上哪儿，小龙女都给出同样的理由。上面的推理最易受下面哪一项批评的攻击？
A．它企图通过把注意力集中在小龙女的行为上从而预防杨过的行为受攻击。
B．它没有证实杨过和小龙女一样的支付不起一个没事先安排的假期旅行的费用。
C．它忽视了这种可能性，即不像杨过那样，小龙女喜欢一个早就计划好的假期。
D．它假定如果小龙女所说的原因不是她的唯一的原因，那么这个原因对小龙女来说根本就不是真正的原因。
E．它没有调查小龙女的行为可能被她所给出的原因所充分地解释的可能性。

人们总是这样问律师：“你明知道罪犯有罪，为什么还真诚地为他辩护？”律师答道：“我这样做是为了维护法律赋予被告的合法权利，这对于实施法律的公正是必不可少的”。从律师的回答中，能得出以下哪项结论？
Ⅰ．被告即使是真正的罪犯，也拥有法律赋予的合法权利。
Ⅱ．只要维护被告，包括真正的罪犯的合法权利，就能保证实施法律的公正。
Ⅲ．如果剥夺那些明显是罪犯的被告的一切权利，那么就不能保证实施法律的公正。
A．仅仅Ⅰ。
B．仅仅Ⅰ和Ⅱ。
C．仅仅Ⅰ和Ⅲ。
D．仅仅Ⅱ和Ⅲ。
E．Ⅰ、Ⅱ和Ⅲ。

Now medical researchers are discovering a truism: "alcohol and tobacco do not mix." These two substances, both dangerous to health, act synergistically, each making the other more powerful and thereby causing worse damage than either would do alone.
Because of this interaction, the person who both smokes and drinks heavily may be at a greater risk of becoming ill than one who drinks like a fish, but never smokes or who smokes like a chimney, but never drinks. To get an idea of how this synergism may work, consider what happens when a smoker lights up a cigarette. With each puff he inhales at least 4,000 different chemicals. These include toxic hydrogen-cyanide, carbon monoxide and nitrogen-dioxide gases, and four dozen compounds such as benzo pyrene and radioactive polonium 210 . All are known as carcinogens. Most chemical vapors in tobacco smoke get deposited in the mouth, nose, throat and lungs in a coating called tar. It is in this tar that most of the cancer--inducing potential of tobacco smoke lies. Then in a scenario typical of chronic heavy drinkers--most of whom also smoke--our smoker feels thirsty and washes down that smoke coating in his mouth and throat with whisky. The alcohol in his drink is not in itself a carcinogen, but it may act as a solvent, dissolving the tar-taped tobacco poisons, and easing the transport of carcinogens across membranes.
Our smoker continues to drink. Soon he lights another cigarette and inhales deeply. Behind his embattled lungs, meanwhile, his liver has gone on full alert to save his life. The three-pound chemical factory, which cleans most toxins from the bloodstream, reacts to alcohol as a foreign substance and metabolizes 95 percent of it into other chemicals. But in turning its energy to clearing just one-half ounce of pure alcohol--the amount in a standard drink--per hour from our drinking smoker's blood, the liver's other metabolic functions suffer a sharp decrease. Poisons from tobacco smoke that otherwise would be removed from his blood within minutes are now allowed to flood his body for hours or days, depending on how much alcohol the liver must dispose of.
The person who smokes one or two packs of cigarettes a day loses on average six to eight percent of his blood's oxygen carrying capacity. If our heavy smoker's use of alcohol has led to alcoholism, he is probably malnourished. This malnourishment compounds problems he is having with insufficient oxygen. His brain cells are dying from it.
The synergistic effect of alcohol and tobacco may deliver a powerful blow to the cardiovascular system as well as the upper respiratory tract. For those prone to hypertension who drink more than two ounces of alcohol a day, high blood pressure is common and with it the increased risk of stroke and heart attack. For hypertensives who combine smoking and drinking, the risks are even greater.
Which of the following can be the best title of this passage？
A．Dead Mixer=Alcohol+ Tobacco.
B．Alcohol and Tobacco Are Dangerous to Health.
C．Tobacco Contains a Lot of Toxic Compounds.
D．Interaction of the Alcohol and Tobacco.

数列{an}的前n项和为Sn，则S5＝5/6。

A．条件（1)充分，但条件（2)不充分。
B．条件（2)充分，但条件（1)不充分。
C．条件（1)和（2)单独都不充分，但条件（1)和条件（2)联合起来充分。
D．条件（1)充分，条件（2)也充分。
E．条件（1)和（2)单独都不充分，条件（1)和条件（2)联合起来也不充分。

The law of supply and demand will eventually take care of a shortage or __ of dentists.
A．surge
B．surplus
C．flood
D．fluctuation

某个实验把一批吸烟者作为对象，分为两组：第一组是实验组，第二组是对照组。实验组的成员被强制戒烟，对照组的成员不戒烟。三个月后，实验组成员的平均体重增加了10%，而对照组成员的平均体重基本不变。实验结果说明，戒烟会导致吸烟者的体重增加。以下哪项如果为真，最能加强上述实验结论的说服力？
A．实验组和对照组成员的平均体重基本相同。
B．实验组和对照组的人数基本相同。
C．除戒烟外，对于每个实验对象来说，可能影响体重变化的生存条件基本相同。
D．除戒烟外，对于每个实验对象来说，可能影响体重变化的生存条件基本保持不变。
E．上述实验的设计者，是著名的保健专家。