【单选题】What are the two ways of reasoning that are most often used in argumentation？

A．Investing more money in studying the teaching methods of foreign languages.

B．Hiring more foreign language teaching assistants in American schools.

C．Starting earlier foreign language teaching in American elementary schools.

D．Sending more American students to other countries to study their language.

The only means of removing the latent heat of condensation from a refrigerant in the normal refrigeration cycle is by _____.

A.passing it through the expansion valve

B.condensing refrigerant in the system condenser

C.passing the gaseous refrigerant through the heat interchanger on the suction side of the compressor

D.maintaining a high pressure on the systems receiver

Tom Burke recently tried to print out a boarding pass from home before one of the frequent/lights he takes. He couldn't. His name, or one similar to it, is now on one of the Transportation Security Administration's terrorist watch lists.

Every day, thousands of people like Burke find themselves unable {o do things like print a boarding pass and are pulled aside for extensive screening because their name, or a name that sounds like theirs, is on one of the watch lists. From the TSA's perspective, the screening is just one of the many new layers of increased security that are designed to prevent terrorist activity. The inconvenience is regrettable, but a price that society has to pay for security. And for national security reasons, the FBI and other government agencies responsible for supplying names to the lists will not disclose the criteria they use. They say that would amount to tipping their hands to the terrorists.

But civil libertarians are more concerned about the long-term consequence of the current lists. On Sept. 11, 2001, the no-fly list contained 16 names. Now, the combined lists are estimated to have as many as 20,000. Internal FBI memos from agents referred to the process as "really confused" and "not comprehensive and not centralized." Burke and others contend that such comments axe disturbing, because it was during the first year after the attacks that the watch lists grew exponentially.

"The underlying danger is not that Tom. Burke can no longer get a boarding pass to get on an air line," says a lawyer. "It's that the Tom Burkes in the world may forever more be associated (with the terrorist watch list)." Burke says they do know that the lists axe frequently updated and distributed internationally, but they don't know how the old lists are destroyed. They also hope to ensure that sometime in the future a person whose name is on the list, but is not a terrorist, does not run into further trouble if, say, law enforcement in another country that they're visiting comes across their name on one of the old lists.

In addition, airlines are concerned that the lists are not updated frequently enough. "We've been encouraging the TSA to work with all of the other federal law-enforcement agencies to get a regular re view of the names that they submit to TSA, because there have been reports that these agencies have said that if there was a review, many of the names could be removed," says Diana Cronin of the Air Transport Association.

The number of names on the no-fly list increases rapidly from 16 to 20,000 most probably because

A．terrorist attacks are launched frequently.

B．many people's names are similar to known terrorists.

C．the screening system is not effective enough.

D．terrorists are not accurately identified after 9.11.

You may find out whether the air is leaking by ______.

A．drying the inner tube

B．running your fingers over the inside of the tyre

C．removing the wheel from the bike

D．putting your ear to the tube and listen

According to the data in Figure 3, what effect, if any,did removing the herbaceous layer have on the percent distribution among the 1-year-old seedlings in the 1-hectare area of the forest? The removal of the herbaceous layer:

A.changed the percent for the northern red oak only.

B.changed the percent for the red maple and the percent for the white pine only.

C.changed the percent for each of the 5 tree species.

D.did not change the percent for any of the 5 tree species.

In the old days, children were familiar with birth and death as part of life. This is perhaps the first generation of American youngster(年轻人)who have never been close by during the birth of a baby and have never experienced the death of a family member.

Nowadays when people grow old, we often send them to nursing homes. When they get sick, we transfer them to a hospital, where children are forbidden to visit terminally ill patients--even when those patients are their parents. This deprives(剥夺)the dying patient of significant family members during the last few days of his life and it deprives the children of an experience of death, which is an important learning experience.

Some of my colleagues and I once interviewed and followed approximately 500 terminally ill patients in order to find out what they could teach us and how we could be of more benefit, not just to them but to the members of their families as well. We were most impressed by the fact that even those patients who were not told of their serious illness were quite aware of its potential outcome.

It is important for family members, and doctors and nurses to understand these patients' communications in order to truly understand their needs, fears, and fantasies(幻想). Most of our patients welcomed another human being with whom they could talk openly, honestly, and frankly about their trouble. Many of them shared with us their tremendous need to be informed, to be kept up-to-date on their medical condition, and to be told when the end was near. We found out that patients who had been dealt with openly and frankly were better able to cope with the approach of death and finally to reach a true stage of acceptance prior to death.

Five hundred critically ill patients were investigated with the main purpose of ______.

A．learning how to best help them and their families

B．observing how they reacted to the crisis of death

C．helping them and their families overcome the fear of death

D．finding out their attitude towards the approach of death

What do you think is the tone in which the author has described his children?

A．Remorse.

B．Relief.

C．Regard.

D．Reproach.