[填空题]As scientific evidence suggests, organic food is more nutritious and safer than conventional food.

[填空题]As scientific evidence suggests, organic food is more nutritious and safer than conventional food.

[单项选择]Scientific evidence from different disciplines demonstrates that in most humans the left hemisphere of the brain controls language.（　）
A. groups of followers
B. years
C. countries
D. fields of study

[简答题]Despite overwhelming scientific evidence that tobacco causes more than 400,000 deaths each year, our nation’’s children continue to have easy access to cigarettes and tobacco. The United States has among the weakest package warnings and the lowest tobacco product prices in the industrialized nations of the world. Yet, after a long and thorough analysis, President Clinton has come forward whit a statement of principles and direction for a national tobacco control plan that represents a major step. The Clinton plan calls for stiff price increases on tobacco produces to reduce teen smoking and tough penalties on the tobacco industry if this does not occur. Eleven major public health organizations, including the American Medical Association, the American Heart Association, and the American Cancer Society, have committed themselves to achieving legislation. But there are challenges ahead. President Clinton did not address one of their primary concerns—the protections they would re

[填空题]Scientific evidence linking breakfast to better health or better performance is surprisingly inadequate, and _________________ (近来大多数的研究是有关孩子的，而不是成人的).

[单项选择]Scientific evidence from different （　） demonstrates that in most humans the left hemisphere of the brain controls language.
A. scopes
B. ranges
C. disciplines
D. arrays

[填空题]There is scientific evidence that the "hippocampi" deep within each half of the brain are the "memory center," where long-term memories are processed and stored.

[单项选择]In the 1950’s, accumulating scientific evidence (26) cigarette smoking and lung cancer made a (27) impact (28) the smoking public. During this period many health agencies declared smoking to be a (29) hazard. US Surgeon GeneralLeroy E. Burney said in 1957, "The weight of the evidence is increasingly pointing to one direction: that (30) smoking is one of the causative factors in lung cancer." The initial reports had the heaviest impact, so (31) total cigarette production (32) in 1953 and again in 1954. (33) reports appeared to have less (34) on smoking habits, and by 1957 cigarette production had (35) above the 1952 level.
(36) four voluntary health organizations (37) president John F. Kennedy to (38) a commission to study the widespread implications of the tobacco problem, the Surgeon General’ s Advisory Committee on Smoking and Health was (39) in 196
A. declined
B. raised
C. risen
D. dropped