单选题We couldn't have passed the final examination ______ your help.

单选题No one can use cell phones in any areas at the hospital where equipment might be affected by the interference from cell phones.

单选题He tried to avoid{{U}} {{/U}}his friends in the street.

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单选题While other animals use a limited range of sounds or signals to communicate, humans have developed complex systems of language that are used to ensure survival, to express ideas and emotions, to tell stories and remember the past. and to negotiate with one another. Oral (spoken) language is a feature of every human society or culture. Experts studying ancient cultures have several theories about how human language began and developed. The earliest language systems probably combined vocal(声音的) sounds with hand or body signals to express messages. Some words may be similar to natural sounds. Others may have come from expressions of emotion, such as laughter or crying. Language, some theorists believe, is a result of group activities, such as working together or dancing. Over 6000 languages and major dialects are spoken in the world today. As some languages grow, others disappear. Languages that grow also develop and change due to class, profession, age group, and other social forces. The Latin language is no longer spoken but survives in written form. Hebrew is an ancient language that became extinct(已灭绝的). but has now been brought back to life and is spoken today. Others, such as the ancient languages of native peoples in Central and South America, the Pacific Islands, and some of the Native American peoples of North America, which had no written form, have been lost as the speakers died. Today anthropologists are trying to record and preserve ancient languages that are still spoken in remote areas or by the last remaining people in a culture.

单选题Mary ______ to pass her entrance examination. A) regulated C) tried B) managed D) handled

单选题Dear Sirs, Thank you for your telex of the 25th. We regret to say that as the price of your video set is about 7% higher than your competitors, the end users are not interested. If you reduce the price by 10%, transaction may be concluded. As the market is dull, we suggest that you make an offer again at our suggested price. Our best regards!

单选题Whom would you rather ______ with you, Peter or John?

单选题It is true that e-mail is a fast, simple, and effective way to communicate with each other. But when the writers of e-mail messages are not aware of the basic rules of good manners, e-mail can be very annoying. Writing good e-mail can be a kind of art. As a matter of fact, remembering some basic rules of form can result in better e-mail—especially for business correspondence.

单选题Those ______ want to watch the football match please hand in your money after school.

单选题Among all the workers in the company, Tom works ______.

单选题What do you ______ to do about the problem now that this solution has failed? A. avoid B. think C. pretend D. intend

单选题It is important that we ______ the task ahead of time.

单选题______ all my letters, I had a drink and went to bed. A. Being finished B. Finishing C. Finished D. Having finished

单选题The tree, the branches ______ are almost bare, is a very old one.A) whoseB) in whichC) of whichD) which

单选题We all know that we should take better care of ourselves, relax more, and have more fun at work (and elsewhere, as well) , but it"s easy to overlook the opportunities to do just that be cause of the daily work priorities that consume our lives. Here are some ideas for learning to take action in your work life.

单选题Would you please pass me the book ______ cover is black?

单选题Xi"an is the starting point of the Silk Road, and had remained China"s political, economic, and cultural center from the 11th century B. C. until the 10th century A.D.. During the Tang Dynasty the city was called Chang" an and was very prosperous. It became a city as famous as the then Rome.

单选题It is reported that air pollution affects rivers and lakes indirectly because it causes acid rain.

单选题If time and money ______, he is going to travel all over the world. A. permitted B. permit C. will permit D. permitting