单选题Although his people did not ______ his efforts, he kept trying.

单选题Despite of their opposition, he went his own way and started his preparations.

单选题Playing a major role in the economic life of the United States, ______. A. women currently make up 46 percent of the work force B. currently women make up 46 percent of the work force C. the work force is currently made up of 46 percent women D. 46 percent of the work force is currently made up of women

单选题They requested that we______them a sample of the product.

单选题Having the highest marks in her class, a scholarship was offered her by the Department.

单选题ULack/U government support, they had to approach sponsors, organizers, and musicians on their own -- at first, she claims, in her country.

单选题Together ______ of Alaska fur seals swim down the Pacific Coast of North America.

单选题If you left your book on the table overnight, you would find the following morning that it was still exactly when you had left it, provided nobody had moved it. If a ball is made to roll on a very smooth surface, it will roll a long distance unless something stops it or changes its direction. This tendency of an object to remain at rest unless something moves it and to continue moving unless something stops it is known as the Law of Inertia. The following examples show the truth of this law. (a)Put a table-cloth on a table and arrange a pile of books on it. Hold one edge of the tablecloth and pull it quickly. The table-cloth will come off, leaving the pile of hooks undisturbed. (b)Place a small piece of cardboard on an open jar and place a coin on it directly over its mouth. Use one finger to flick the piece of cardboard away. You will notice that the coin drops into the jar. (c)Sitting in a car which starts suddenly, you feel you are jerked backwards. In fact, you arc not jerked backwards. Your lower half, which is in contact with the cushion, is forced to move forward with the car, and the upper part of your body, which remained at rest, is left behind.

单选题It is true that London is often sunless, damp and raw, though the occasional sunny days seem all the more attractive by contrast.

单选题______to some parts of South America is still difficult, because parts of the continent are still covered with thick forests.

单选题I bought a new sweater in a newly-open clothes-market. But what a pity it was that the sweater ______when I washed it. A． shrank B． contracted C． shortened D． condensed

单选题Although the speaker was a well-known personality, his speech was poorly. ______.

单选题The use of the new technology will have a {{U}}profound{{/U}} effect on schools.

单选题The weekend event will be centred around Wye College in Ashford, Kent, but the outing to the docks should be the highlight .

单选题 The United States government publishes guidelines for appropriate nutrient intakes. These are known as the Recommended Dietary Allowances (RDAs) and are updated regularly based on new research in nutrition. RDAs are suggested amounts of calories, protein, and some minerals and vitamins for an adequate diet. For other dietary substances, specific goals must await further research. However, for the U.S. population as a whole, increasing starch and fiber in one's diet and reducing calories (primarily from fats. sugar, and alcohol) is sensible. These suggestions are especially appropriate for people who have other factors for chronic diseases due to family history of obesity, premature heart disease, diabetes, high blood pressure, and high blood cholesterol, or for those who use tobacco. Snacks can furnish about one-fourth of the calorie requirements among teenagers. Those snacks should also provide much of the day's allowances for protein, minerals, and vitamins. Sandwiches, fruit, and milk make good snacks for active teenagers. Food from the food pyramid may be part of any meal. A grilled cheese sandwich or a bowl of whole-grain cereal is just as nutritious in the morning as it is at noon. In addition, a good breakfast consists of any foods that supply about one-fourth of the necessary nutrients for the day.

单选题Negro slavery, many claimed, was good for all ______.

单选题A mirage is an optical______. A． allusion B． delusion C． elusion D． illusion

单选题The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, particularly first marriages 41 young couples, are the result of 41 attraction and affection 43 than practical considerations. In the United States, parents do not arrange marriages for their children. Teenagers begin 44 in high school and usually find mates through their own academic and social 45 . Though young people feel 46 to choose their friends from 47 groups, most choose a mate of similar background. This is 48 in part to parental guidance. Parents cannot select spouses for their children, but they can usually 49 choices by 50 disapproval of someone they consider unsuitable. 51 , marriages between members of different groups (interclass, interfaith, and interracial marriages) are increasing, probably because of the greater 52 of today"s youth and the fact that they are restricted by 53 prejudices than their parents. Many young people leave their home towns to attend college, 54 in the armed forces, 55 pursue a career in a bigger city. Once away from home and family, they are more 56 to date and marry outside their own social group. In mobile American society, interclass marriages are neither 57 nor shocking. Interfaith marriages are 58 the rise particularly between Protestants and Catholics. On the other hand, interracial marriage is still very uncommon. It can be difficult for interracial couples to find a place to live, maintain friendships, and 59 a family, Marriages between people of different national 60 (but the same race and religion) have been commonplace here since colonial times.

单选题As early as in 1647 Ohio made a decision that flee, tax-supported schools must be established in every town {{U}}to have{{/U}} 50 households or more.

单选题Though she isn't British by birth, she's British citizen {{U}}by virtue of{{/U}} her marriage to an Englishman.