Most experts say that the new tax plan will have a negligible effect on the country's economic problems.

Humans are using up the world" s natural riches at an alarming rate.

The period from 3, 000 to 1, 000 B. C. E. , when the use of bronze became common , is normally referred to as the Bronze Age.

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BSection A/B

Applied research, undertaken to solve specific practical problems, has an immediate attractiveness because the results can be seen and enjoyed. For practical reasons, the sums spent on applied research in any country always【B1】______for basic research, and the proportions are more unequal in the less developed countries. Leaving aside the funds【B2】______by industry—which is naturally far more concerned with【B3】______because these increase profits quickly—the funds the U. S. Government allots to basic research currently amount to about 7 percent of its over-all research and development funds. Unless adequate safeguards are provided, applied research invariably tends to【B4】______Then, as Dr. Waterman has pointed out, " Development will【B5】______prematurely, career incentives will gravitate strongly toward applied science, and the opportunities for making【B6】______will be lost. Unfortunately , pressures to emphasize new developments, without corresponding emphasis upon【B7】______science, tend to【B8】______the quality of the nation' s technology in the long run, rather than to improve it."

New research methods are being brought to______the subject.

The person he interviewed was______his former schoolmate.

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The cells contribute to immune defenses in two major ways: some direct and ______immune responses whereas others directly attack infected or cancerous cells.

All the rooms on the second floor are not bare floor, having nicely______carpets, which are included in the price of the house.

I try to be broadminded but do feel antipathy toward people who are dirty and untidy.

If you______a heart-attack or stroke victim who needs your assistance, your first response should be to stay calm and urge bystanders to call for an ambulance.

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Professor Johnson's retirement______from next January.

Memory can be both enhanced and impaired by use of drugs.

BSection B/B

Despite the severe condition in the course of the earthquake, doctors could not be deterred from their work.