Vocabulary and Structure
D 34. The Space Age ____in October 1957 when the first artificial satellite was launched by the
former Soviet Union.
A. initiated B. originates C. embarked D. commenced
B 36. It is high time that you _____the test paper and _____it in.
A. finish, hand B. finished, handed
C. finished, to hand D, have finished, handed
A 37.Her parents wanted to change her mind so they tried to ____ her to their way of thinking.
A. convert B. alter C. transfer D. convey
B 39.I wouldn’t ＿to interfere. Instead, I let my students make their own decisions.
A. resume B. presume C. assume D. consume
C 42．Provided that my expenses＿，I will go with you for the investigation next week.
A. are paid for B. will be paid
C. can be paid D. be paid for
B 44．All the year she has been＿between optimism and despair.
A. vibrating B. swinging C. fluctuating D. waving
A 45．The scientists at the University of Bern in Switzerland have used a weakened virus that is not_____ and has proved safe and effective．
A. infectious B. harmful C. dangerous D. invading
D 47.Tourism has also been greatly＿the rapid development of some developing nations．
A. lain in B. consisted in C. responsible for D. accounted for
defendant
B 49. If no one asks any question，I＿everybody understands．
A. deduce B. presume C. pretend D. presuppose
C 50.It was important for any lecturer to get the audience＿right at the beginning and then
gradually increase the pressure．
A. related B．concerned C. involved D. mixed
B 53. After a few months of working with his hands，Dr. Brown returned to his college, _____that his time had been well spent.
A. persuaded B. convinced C. noticed D. promised
C 58.Before police could stop the drink-crazed driver, he had crashed＿another car and sent
six persons to the hospital．
A. out B．against C. into D. on
C 59. The high court reversed the decision of the lower court because the ruling＿the defendant his right.
A. refused B. declined C. denied D. ignored
D 71. A newly developed robot that can show its emotions by smiling or frowning may one day help computer users talk as quickly and easily to machine＿with other people.
A. such as they now talk B. like they now talk
C. as much as they now do D. as they now do
B 72. Initially the Lincoln administration refused black volunteers; they feared that the appearance of black Yankees on the battlefield might suggest that the war＿other purposes in addition to the restoration of the Union.
A. have B．had C. had had D. would have
C 73. The police admitted＿a mistake in arresting an innocent man.
A. to make  B. to have made  C. to having made  D. to making
B 76. The customs inspector was＿for smugglers．
A. on the guard B. on the watch C. on watch D. on alert
D 83. Diamonds have little＿value and their price depends almost entirely on their scarcity．
A. extinct B. permanent C. surplus D. intrinsic
C 85. One of the attractive features of the training was the way the practical work had been＿
into the learning process．
A. adjusted B. alternated C. incorporated D. combined
D 89. For many patients, institutional care is the most＿and beneficial form of care．
A. pertinent B．appropriate C. acute D. persistent
B 97. Superconductors lose electrical resistance only＿subjected to intense cold.
A. through B. when C. as D. by
D 98. Please check the copy＿the original before handing in．
A. with  B. against C. over D. A and B
Reading comprehension
(Directions：Choose the best answer for each of the questions or unfinished statements after reading the passages.)
Passage Two
Television was not invented by any one person. Nor did it spring into being overnight. It evolved gradually, over a long period, from the ideas of many people一each one building on the work of their predecessors．The process began in 1873，when it was accidentally discovered that the electrical resistance of the element selenium（硒）varied in proportion to the intensity of the light shining on it. Scientists quickly recognized that this provided a way of transforming light variations into electrical signals. Almost immediately a number of schemes were proposed for sending pictures by wire（it was, of course，before radio)．
One of the earliest of these schemes was patterned on the human eye. Sugested by G.R.Carey in 1875, it envisioned a mosaic of selenium cells on which the picture to be transmitted would be focused by a lens system. At the receiving end there would be a similarly arranged mosaic made up of electric lights．Each selenium cell would be connected by an individual wire to the similarly placed light in the receiving mosaic．Light falling on the selenium cell would reproduce the original picture. Had the necessary amplifiers（放大器、扩音器）and the right kind of lights been available,this system would have worked. But it also would have required an impractical number of connecting wires．
Carey recognized this and proposed to "scan" the cells一transmitting the signal from each cell to its associated light, in turn, over a single wire．If this were done fast enough, the retentive power of the eye would cause the resultant（合成的）image to be seen as a complete picture.

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