单选题What do you think of the word-association tests as discussed in Passage 3?

单选题Business and government managers often promote "clean desk" policies to avoid disorganized offices and messy desks, ______ boosting work efficiency and productivity. A. for the purpose of B. for good of C. for purpose of D. for the fun of

单选题Richard Satava, program manager for advanced medical technologies, has been a driving force bringing virtual reality to medicine, where computers create a "virtual" or simulated environment for surgeons and others medical practitioners (从业者). "With virtual reality we'll be able to put a surgeon in every trench," said Satava. He envisaged a time when soldiers who are wounded fighting overseas are put in mobile surgical units equipped with computers. The computers would transmit images of the soldiers to surgeons back in the U. S. The surgeons would look at the soldier through virtual reality helmets (头盔) that contain a small screen displaying the image of the wound. The doctors would guide robotic instruments in the battlefield mobile surgical unit that operate on the soldier. Although Satava's vision may be years away from standard operating procedure, scientists are progressing toward virtual reality surgery. Engineers at an international organization in California are developing a tele-operating device. As surgeons watch a three-dimensional image of the surgery, they move instruments that are connected to a computer, which passes their movements to robotic instruments that perform the surgery. The computer provides feedback to the surgeon on force, textures, and sound. These technological wonders may not yet be part of the community hospital setting but increasingly some of the machinery is finding its way into civilian medicine. At Wayne State University Medical School, surgeon Lucia Zamorano takes images of the brain from computerized scans and uses a computer program to produce a 3-D image. She can then maneuver the 3-D image on the computer screen to map the shortest, least invasive surgical path to the tumor (肿瘤). Zamorano is also using technology that attaches a probe to surgical instruments so that she can track their positions. While cutting away a tumor deep in the brain, she watches the movement of her surgical tools in a computer graphics image of the patient's brain taken before surgery. During these procedures--operations that are done through small cuts in the body in which a miniature camera and surgical tools are maneuvered--surgeons are wearing 3-D glasses for a better view. And they are commanding robot surgeons to cut away tissue more accurately than human surgeons can. Satava says, "We are in the midst of a fundamental change in the field of medicine. /

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In the world of entertainment, TV talk shows have undoubtedly flooded every inch of space on daytime television. And anyone who watches them regularly knows that each one varies in style and format. But no two shows are more profoundly opposite in content, while at the same time standing out above the rest, than the Jerry Springer and the Oprah Winfrey shows. Jerry Springer could easily be considered the king of "trash talk (废话)". The topics on his show are as shocking as shocking can be. For example, the show takes the ever-common talk show themes of love, sex, cheating, guilt, hate, conflict and morality to a different level. Clearly, the Jerry Springer show is a display and exploitation of society"s moral catastrophes (灾难)， yet people are willing to eat up the intriguing predicaments (困境) of other people"s lives. Like Jerry Springer, Oprah Winfrey takes TV talk show to its extreme, but Oprah goes in the opposite direction. The show focuses on the improvement of society and an individual"s quality of life. Topics range from teaching your children responsibility, managing your work week, to getting to know your neighbors. Compared to Oprah, the Jerry Springer show looks like poisonous waste being dumped on society. Jerry ends every show with a "final word". He makes a small speech that sums up the entire moral of the show. Hopefully, this is the part where most people will learn something very valuable. Clean as it is, the Oprah show is not for everyone. The show"s main target audience are middle-class Americans. Most of these people have the time, money, and stability to deal with life"s tougher problems. Jerry Springer, on the other hand, has more of an association with the young adults of society. These are 18 to 21-year-olds whose main troubles in life involve love, relationship, sex, money and peers. They are the ones who see some value and lessons to be learned underneath the show"s exploitation. While the two shows are as different as night and day, both have ruled the talk show circuit for many years now. Each one caters to a different audience while both have a strong following from large groups of fans. Ironically, both could also be considered pioneers in the talk show world. (388 words)

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

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A. suggestionB. actionC. attentionD. revolution

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