单选题Some people eat ______ as they actually need everyday.

单选题________ she had come to dislike Dr. Smith, she remained constantly at his side, helping him to care for the sick and wounded.

单选题He kept his head; otherwise the accident ______.

单选题The worst form of competition in schools is the disproportionate emphasis on exams.

单选题The whole world is now clearly aware of the ______ to which global warming has affected the earth.

单选题Not everyone has the courage to admit his or her own ______. A. errors B. faults C. mistakes D. defects

单选题No sooner had Mrs. Smith entered the kitchen ______ a knock at the door. A. did she hear B. than she heard C. then she heard D. when she heard

单选题He's ______ because he has won the prize. A. nervous B. satisfying C. excited D. exciting

单选题The first impression is very important, ______ in an interview.

单选题The day I shall never forget is the one ______ I joined the Party.

单选题In the Mediterranean seaweed is so abundant and so easily harvested that it is never of great ______.

单选题It is essential that everyone ______ for emergency.

单选题As I felt so tired, my doctor ______ me to take a holiday by the sea.

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单选题I was determined ______ somewhere which was fit for taking exercise.

单选题This practice book is intended for foreign engineers or students of engineering who have already mastered the elements of English, and who now want to use their knowledge of the language to read books on their own subjects. Readers should understand, however, that the purpose of the book is to teach language, not to teach engineering. The language in which scientific and technical facts are expressed is certainly not a different language from that of everyday life, but all the same it presents the foreign student with a number of special problems. The most obvious and the most widely recognized of these problems is the vocabulary. Much more difficult are the semi-scientific or semi-technical words, which have a whole range of meanings and are frequently used idiomatically (地道). One of the aims of this practice book is to present as many of these words as possible, and as often as possible: words such as work and paint and load and feed and force. Words like these look harmless, but they can cause a lot of trouble to the student. But more than anything else, I have tried to describe the technical statement, that is, the completed sentence rather than the individual word. Many of the structures illustrated in the book are found also in ordinary language though not so commonly. But they are essential to the expression of technical facts and ideas — at least for the present.

单选题The experiment shows that proper amounts of exercise, if ______ regularly, can improve our health.

单选题Reporters and photographers alike took great ______ at the rude way the actors behaved during the interview.

单选题You have to take the ______ examination before an interview can be considered.

单选题Earthquakes may rightly be ranked as one of the most destructive forces known to man: since records began to be written down, it has been estimated that earthquakerelated fatalities have numbered in the millions, and that earthquake-related destruction has been beyond calculation. The greater part of such damage and loss of life has been due to falling down of buildings and the effects of rock slides, floods, fire, disease, gigantic sea waves, and other phenomena resulting from earthquakes, rather than from the quakes themselves. The great majority of all earthquakes occur on two specific areas, along the coasts of the Pacific Ocean from the East Indies to the Atlas Mountains. But they may, however, happen anywhere at any time. This element of the unknown has for centuries added greatly to the dread and horror surrounding earthquakes, but in recent times there have been indications the earthquake prediction may be possible. By analyzing changes in animal behavior, patterns of movements in the earth"s surface, and other unusual phenomena, scientists have shown increasing success in predicting when and where earthquakes will strike. As a result, a worldwide earthquake warning network is already in operation and has helped to prepare for the vast destruction that might otherwise have been totally unexpected. It is doubtful that man will ever be able to control earthquakes and do away with the destructiveness altogether, but as how and why earthquakes happen become better understood, man will become more and more able to deal with their possible destruction before it occurs.