单选题Anyone who wishes to join the senior marketing team should be ______ that we work longer hours than most other members of the firm. A. known B. aware C. careful D. noticeable

单选题--This dress was last year's style. --I think it still looks perfect ______ it has gone out this year. A. so that B. even though C. as if D. ever since

单选题What did scientists think was true?

单选题The bus came to an {{U}}abrupt{{/U}} stop, making us wonder where we were. A. noisy B. sudden C. slow D. jumpy

单选题The question came up at the meeting ______ we had enough money for our research. A. that B. which C. whether D. if

单选题Although the first part of the book is easy, the rest ______. A. are difficult B. has proved difficult C. is supposed difficult D. have been found difficult

单选题A scientist often reaches a dead end that leads to no alternatives in research and has to go back and determine if all the（ ） made are true to how the world operates

单选题The writer cites the Duomo in the last paragraph as an example to illustrate that ______.

单选题 Major companies are already in pursuit of commercial applications of the new biology. They dream of placing enzymes in the automobile to monitor exhaust and send data on pollution to a microprocessor that will then adjust the engine. They speak of what the New York Times calls "metal-hungry microbes that might be used to mine valuable trace metal from ocean water". They have already demanded and won the right to patent new life forms. Nervous critics, including many scientists, worry that there is corporate, national, international, and inter-scientific rivalry in the entire biotechnological field. They create images not of oil spills, but of "microbe spills" that could spread disease and destroy entire populations. The creation and accidental release of extremely poisonous microbes, however, is only one cause for alarm. Completely rational and respectable scientists are talking about possibilities that stagger the imagination. Should we breed people with cow-with stomachs so they can digest grass and hay, thereby relieving the food problem by modifying us to eat lower down on the food chain? Should we biologically alter workers to fit the job requirement, for example, creating pilots with faster reaction times or assemblyline workers designed to do our monotonous work for us? Should we attempt to eliminate "inferior" people and breed a "super-race"? (Hitler tried this, but without the genetic weaponry that may soon issue from our laboratories. ) Should we produce soldiers to do our fighting? Should we use genetic forecasting to pre-eliminate "unfit" babies? Should we grow reserve organs for ourselves, each of us having, as it were, a "savings bank" full of spare kidney, livers, or hands? Wild as these notions may sound, every one has its advocates (and opposers) in the scientific community as well as its striking commercial application. As two critics of genetic engineering, Jeremy Rifkin and Ted Howard, state in their book Who Should Play God? , "Broad scale genetic engineering will probably be introduced to America much the same way as assembly lines automobiles, vaccines, computers and all the other technologies. As each new genetic advance becomes commercially practical, a new consumer need will be exploited and a market for the new technology will be created. "

单选题Weve spent so much on advertisements, but the results are not（ ）

单选题Before the situation was explained to him,Franco______ believed that the automobile prototype was the finished product.

单选题If you have any__________about the products on display, one of our salespeople will be happy to assist you.

单选题Ms. Taylor has called the managers to ______ her in the main conference room to discuss next year's budget. A. met B. meet C. have met D. will meet

单选题——This digital camera is really cheap!——The___________the better．I’m short of money，you see．

单选题Internet shopping is a new way of shopping．Nowadays，you can shop for just about anything from your armchair．All you need is a computer which is linked to the Internet．Shopping on the Internet is becoming increasingly popular．In the United States，people spent over $2．5 billion on Internet shopping in 1998．This figure is expected to reach $11 billion by the year 2004． People can shop for a variety of producl s on the Internet．Physical products include items suchas books，CDs，clothes and food．These types of products are the most common purchases through the Internet．You can also buy information products such as on-line news or magazine stories，or you can download computer software through the Internet．Services such as booking airline tickets，reserving hotels or renting cars are also available on the Internet．You can also go shopping on the Internet for entertainment services and take part in on-line games． Internet shopping offers a number of benefits for the shopper．The most important advantage is convenience．You can shop whenever you like as the on-line shops are open 24 hours a day and you don’t have to queue with other shoppers at the check-out counters．Secondly，it is easy to find what you are looking for on the Internet．Even out-of-print books may be ordered on line．Finally，it is often cheaper to buy goods through the Internet，and you can tell the shop exactly what you want． The main disadvantage of Internet shopping is that you cannot actually see the products you are buying or check their quality．Also，many people enjoy shopping in the city and miss the opportunity to talk to friends．Some people are worried about paying for goods using credit cards，so Internet companies are now finding ways to make on-line payment safe． Internet shopping is sure to become more and more popular in the years ahead．It promises to change the way we buy all kinds of things—from tonight’s dinner to a new car．

单选题If you have not received______of your order within two business days, please contact our customer service center.

单选题We have got to abide by the rules.

单选题The play ______ next month aims mainly to reflect the local culture. A. produced B. being produced C. to be produced D. having been produced

单选题Sports and games are very useful to character-training.

单选题The team manager charged Michelle Palamides with the task of ______ the department's webpage for the company's new intranet. A. design B. designing C. to design D. designed