3.According to the passage, whom are we speaking to when we say Would you mind closing the door?

A . It needs not to be regularly replaced B . It is designed to protect from possible impact C . It is required to be worn on deck at all times by all ships D . fibreglass hardhat should not be used on board shi

A．that being kind and being smart are not mutually exclusive. B．whether Harvard"s "freshman pledge" should be adopted or not. C．that empathy has become the new scapegoat of academic decline. D．when the debate over Harvard"s "freshman pledge" will be ended.

A．distances. B．masses. C．colleagues. D．criticisms.

A．It provides a group of specific examples from which generalizations concerning the nature of drama are drawn later in the passage. B．It explains principles concerning one aspect of tragedy, which are followed later by principles for other aspects. C．It defines terms of dramatic principles that are more thoroughly explained later in the passage. D．It briefly compares and contrasts the principles of drama that are examined in detail later in the passage. E．It explains a method of judging a work of drama, a method that is used later in the passage.

A． Tom, a boy in the kindergarten. B． Kate, a high school leaver. C． Jane, a primary school student. D． Steve, a man in his thirties.

A．ideal. B．state. C．president. D．Rushmor

A．human brains differ considerably B．the brain a person is born with is important in determining his intelligence C．environment is crucial in determining a person’s intelligence D．persons having identical brains will have roughly the same intelligence

A.Courses were more practical. B.Educators laid great stress on the maturity in student life. C.Admission standards were higher. D.Students were younger.

A．Relationships. B．Interpersonal relationships. C．Inter-group relationships. D．Interdepartmental relationships. 此题为多项选择题。

A．characteristics. B．individuals. C．species. D．contemporaries.

Age has its privileges in America. And one of the more prominent of them is the senior citizen discount. Anyone who has reached a certain age—in some cases as low as 55—is automatically entitled to a dazzling array of price reductions at nearly every level of commercial life. Eligibility is determined not by one’s need but by the date on one’s birth certificate. Practically unheard of a generation ago, the discounts have become a routine part of many businesses—as common as color televisions in motel rooms and free coffee on airliners. People with gray hair often are given the discounts without even asking for them；yet, millions of Americans above age 60 are healthy and solvent (有支付能力的). Businesses that would never dare offer discounts to college students or anyone under 30 freely offer them to older Americans. The practice is acceptable because of the widespread belief that “elderly” and “needy” are synonymous (同义的). Perhaps that once was true, but today elderly Americans as a group have a lower poverty rate than the rest of the population. To be sure, there is economic diversity within the elderly, and many older Americans are poor, But most of them aren’t. It is impossible to determine the impact of the discounts on individual companies. For many firms, they are a stimulus to revenue. But in other cases the discounts are given at the expense, directly or indirectly, of younger Americans. Moreover, they are a direct irritant in what some politicians and scholars see as a coming conflict between the generations. Generational tensions are being fueled by continuing debate over Social Security benefits, which mostly involves a transfer of resources from the young to the old. Employment is another sore point, Buoyed (支持) by laws and court decisions, more and more older Americans are declining the retirement dinner in favor of staying on the job-thereby lessening employment and promotion opportunities for younger workers. Far from a kind of charity they once were, senior citizen discounts have become a formidable economic privilege to a group with millions of members who don’t need them. It no longer makes sense to treat the elderly as a single group whose economic needs deserve priority over those of others. Senior citizen discounts only enhance the myth that older people can’t take care of themselves and need special treatment； and they threaten the creation of a new myth, that the elderly are ungrateful and taking for themselves at the expense of children and other age groups. Senior citizen discounts are the essence of the very thing older Americans are fighting against-discrimination by age. 31. We learn from the first paragraph that ________. A) offering senior citizens discounts has become routine commercial practice B) senior citizen discounts have enabled many old people to live a decent life C) giving senior citizens discounts has boosted the market for the elderly D) senior citizens have to show their birth certificates to get a discount

A．When was the Umbrella Invented？ B．The History of Umbrella C．Umbrella—A Symbol Honor D．Who Used Umbrellas First？

A．show us the function of major sports B．encourage us to go in for green sports C．discuss the major influence of popular sports D．introduce different types of environment-friendly sports

A.physical distance. B.psychological distance. C.physiological distance. D.philosophical distance.

A pharmaceutical company tested a new painkiller on 1,000 lab rats that were fed large doses of the painkiller for a two-month period. By the end of the experiment, 39 of tile rats had died. The company concluded that the painkiller was sufficiently safe to test on humans. Which of the following, if true, provides the most support for the pharmaceutical company's conclusion？ A．The amount of painkiller fed to the rats was substantially greater, in relation to body mass, than the dosage any human would take under normal circumstances. B．Because of the different body chemistry of humans and rats, some compounds can be dangerous for rats but safe for humans, and vice versa. C．Tests of this same painkiller on dogs showed that 3 out of 50 dogs developed lesions on their livers during the course of the experiment. D．The researchers found that during the experiment, the rats showed a significantly lower sensitivity to pain than rats do under normal circumstances. E．In an experiment of this length with this number of rats, it is not unusual for up to 50 rats to die during the experiment for reasons unrelated to the experiment itself.