单选题She began to ______ something but stopped ______ when she heard the teacher. A. tell; saying B. speak; talking C. say; speaking D. talk; telling

单选题I am running down an alley with a stolen avocado, having climbed over a white brick fence and into the forbidden backyard of a carefully manicured estate at the corner of E1 Dorado and Crescent Drive in Beverly Hills, California. I have snatched a rock-hard Fuerte avocado from one of the three avocado trees near the fence, I have been told that many ferocious dogs patrol the grounds; they are killers, these dogs. I am defying them. They are nowhere to be found, except in my mind, and I'm out and gone and in the alley with their growls directing my imagination. I am running with fear and exhilaration, beginning a period of summer. Emerging from the shield of the alley I cut out into the open. Summer is about running, and I am running, protected by distance from the dogs. At the corner of Crescent Drive and Lomitas, I spot Bobby Tornitzer on a bike. I shout "Tornitzer!" He turns his head. His bike wobbles. An automobile moving rapidly catches Tornitzer's back wheel. Tornitzer is thrown high into the air and onto the concrete sidewalk of Crescent Drive. The driver, a woman with gray hair, swirls from the car hysterically and hovers noisily over Tornitzer, who will not survive the accident. I hold the avocado to my chest and stand, frozen, across the street. I am shivering in the heat, and sink to my knees. It is approximately 3:30 in the afternoon, it is June 21, 1946. In seven days, I will be 8 years old.

单选题Without computer network, it would be impossible to carry on ______ any business operation in the advanced countries. A. practically B. preferably C. precisely D. possibly

单选题Success in life does not depend so much on one's school record ______ on one's honesty and diligence. A. but B. whereas C. as D. like

单选题Chapter-A-Day is intended to help people ______.

单选题In order to understand the concept of infinity, we must think in much broader terms than we {{U}}are accustomed to{{/U}}.

单选题The abacus is the counting frame that was the most widely used device for doing arithmetic in ancient times and whose use______into modern times in the Orient.

单选题A. suggestionB. actionC. attentionD. revolution

单选题You had better______ your seat today if you want to go to the game.

单选题The first European stock exchange was established in Antwerp, Belgium(比利时), in 1531. There were no stock exchanges in England until the 1700's. A man wishing to buy or sell shares of stock had to find a broker(agents)to transact his business for him. In London, he usually went to a coffee house, because brokers often gathered there. In 1773, the brokers of London formed a stock exchange. In New York City, brokers met under an old button-wood tree on Wall Street. They organized the New York Stock Exchange in 1792. The American Stock Exchange, the second largest in the United States, was formerly called the Curb Exchange because of its origin on the streets of New York City. A stock exchange is a market place where member brokers buy and sell stocks and bonds (债 券) of American and foreign businesses on behalf of the public. A stock exchange provides a market place for stocks and bonds in the same way a board of trade does for commodities. The stockbrokers receive a small commission on each transaction they make. The stockholder may sell his stock wherever he wants to unless the corporation has some special rule to prevent it. Prices of stock change according to general business conditions and the earnings and future prospects(前景) of the company. If the business is doing well, the stockholder may be able to sell his stock for a profit. If it is not, he may have to take a loss.

单选题The hobby of collecting autographs (亲笔签名) is called philography, from a Greek word meaning love of writing. People 1 many kinds of autographs. Some collect signatures or other handwritten materials of authors, composers, movie stars, or sports heroes. Others focus on certain 2 such as the signing of the Declaration of Independence, a presidential election, or the space program. 3 collectors try to acquire a complete set of autographs of Novel Prize winners or Academy Award winners. Collectors may request autographs 4 celebrities either in person or by letter. Most beginning autograph collectors do not have the knowledge to determine 5 an autograph is genuine (真实的). They may mistake other kinds of signatures for 6 handwritten signatures. For example, some people have secretaries who sigh their mail. Some individuals send out mass-produced letters or signed photographs to collectors who 7 their autographs. Many famous people use a mechanical device called an Autopen to sign autographs. The 8 can sign 3,000 signatures in eight hours. The only way to recognize an Autopen autograph is to compare two of them. All Autopen autographs are 9 , but no two handwritten autographs are 10 alike.

单选题The lawyer advised him to drop the______, since he stood little chance to win.

单选题Miss Langham arm in arm with Mr. Peabody -- ______ sight! A. how astonishing a B. so an astonishing C. what astonishing a D. such an astonishing

单选题Key James, Secretary of Health and Human Resources in the Virginia State government, loves to turn the tables on those who don’t think it’s possible to be middle-class, conservative, educated and still be truly black. Once, during an abortion debate, a woman in the audience angrily told James she was so middle-class she didn’t have a clue about real African American life. "If you understood what these women go through," the woman said, "you would realize that abortion is their only choice." James then asked the woman to consider a poor black mother on welfare. She already has four children and an alcoholic husband who has all but abandoned the family. Now she discovers another child is on the way. "How would you counsel that woman? "asked James. "Have an abortion," the woman responded. "That child would have a very poor quality of, life." "I have a vested interest in your answer," James said. "The woman I described was my mother. I was the fifth of six children born into poverty. And, in case you're interested, the quality of my life is just fine!/

单选题My sister is used to ______ with all the windows open. A. sleep B. sleeping C. have slept D. the sleeping

单选题Seldom ______ so warmly welcomed. A. has he been B. he has been C. was he D. he had been

单选题The passage provides information for answering all of the following questions except ______.

单选题You ______ him so closely; you should have kept your distance. A. shouldn't follow B. mustn't follow C. couldn't have been following D. shouldn't have been following