Obesity is a condition perpetuated by a diversity of factors.

He was conspicuously hairy nor shiny-bald, but his hair was graying and receding tactfully in keeping with his age.

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But it is a particular concern over children on insulin because their blood sugar levels tend to more ______widely, researchers said.

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.

New research methods are being brought to______the subject.

BSection A/B

The prevalence of highly intelligent devices has eliminated the handicaps associated with most disabilities.

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.

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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."

The person he interviewed was______his former schoolmate.

Senior citizens are advised to go in for some creative activities to keep themselves mentally young.

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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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Mr. Brown' s condition looks very serious and it is doubtful if he will______.

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