单选题Water makes up some 70 {{U}}percentage points{{/U}} of the body, and drinking enough water— either tap water or expensive mineral water—will ensure that the body is properly lubricated and flushed.

单选题The graduate committee must be in full accord in their approval of a dissertation. A. indecisive B. sullen C. vocal D. unanimous

单选题We are not conscious of the extent of which work provides the psychological satisfaction that can make the difference between a full and empty life.

单选题When Joe was left to live with those people, he found that they were so ______ of life that he couldn't stay with them.

单选题This book is about how these basic beliefs and values affect important sides of American life. A. fashions B. frontiers C. facets D. formats

单选题Congress makes the laws in the United States. It has two pans, which are more or less equal in power. They are known as the House of Representatives and the Senate. The House of Representatives is larger than the Senate whose 100 members (two from each state) serve for six years. The 435 members of the House are elected every two years, and the number from each state is determined by the population of the state. For example, California, which has a large population, has 43 representatives, while the State of Nevada has only one. The House and Senate are divided into small groups which take care of special matters such as education or foreign affairs. The most important work of Congress is often done in these groups, which are called subcommittees. According to the Constitution of the United States, a senator must be at least 30 years old and he must have been a citizen of the United States for nine years at the time of his election. To be elected to the House a person must be 25 years old and must have been a United States citizen for seven years. At the present time, members of Congress include businessmen, farmers, teachers, and especially lawyers. In general, senators are better known than representatives because they are fewer in number and serve for a longer time. Many American presidents served in Congress before they became president.

单选题I don't doubt {{U}}how{{/U}} the plan will be well received.

单选题Every group of human beings has ______.

单选题What effect does confinement have on clever animals, according to the text?

单选题The catalogue may be had {{U}}for asking{{/U}}.

单选题More poles are needed to ______ the weight of the tent. A. retain B. sustain C. maintain D. obtain

单选题You are exposed to obtrusive ads that ______ seemingly from nowhere even when you are disconnected from the Net，and your personal information gathered and sent off without you being aware of it． A．size up B．dwindle away C．conjure up D．pop up

单选题The streets of the Dual Springs neighborhood, a migrant-worker hub in northern Beijing, are ______ . That's no surprise; more than 13,000 people have been quarantined in China's capital to halt the insidious spread of severe acute respiratory syndrome (SARS).

单选题Curt Carlson, the wealthiest man in Minnesota, owned a hotel and travel company with sales reaching in the neighborhood of $ 9 billion. A. precisely B. merely C. substantially D. approximately

单选题The book provides tips for Westerners who work in Japanese firms: get together outside the ofrice, find a mentor for support and refrain for practicing Japanese with colleagues on the job.

单选题The nuclear family ______ a self-contained, self-satisfying unit composed of father, mother and children. A. refers to B. defines C. describes D. devotes to

单选题 The field of medicine has always attracted its share of quacks and charlatans — disrepu-table women and men with little or no medical knowledge who promise quick cures at cheap prices. The reasons why quackery thrives even in modem times are easy to find. To begin with, pain seems to be a chronic human condition. A person whose body or mind "hurts" will often pay any amount of money for the promise of relief. Second, even the best medical treatment cannot cure all the ills that beset men and women. People who mistrust or dislike the truths that their physicians tell them often turn to more sympathetic ears. Many people lack the training necessary to evaluate medical claims. Given the choice between (a) a reputable physician who says a cure for cancer will be long, expensive and may not work at all, and (b) a salesperson who says that several bottles of a secret formula "snake oil" will cure not only cancer but tuberculosis as well, some individuals will opt for "snake oil". Many "snake oil" remedies are highly laced with alcohol or narcotic drugs. Anyone who drinks them may get so drunk or stoned that they drown their pains in the rising tide of pleasant intoxication. Little wonder that "snake oil" is a popular cure-all for minor aches and hurts! But let there be no misunderstandings. A very few "home remedies" actually work. However, most remedies sold by quacks are not only useless, but often can be harmful as well.

单选题Coming at the Town Hall, the Queen was welcomed by the Mayor. A. On reaching B. On arrival C. At arrival D. At reaching

单选题Successful learning is not a (n) ______ activity but consists of four distinct stages in a specific order.

单选题"Hook up" as in "hooked their TVs up" underlined in Paragraph 1 most probably means to ______.