[单项选择]Eating too much fat can (lead to) heart disease and cause high blood pressure.
A. attribute to
B. attend to
C. contribute to
D. devote to

[单项选择]Eating too much fat can (lead to) heart disease and cause high blood pressure.
A. attribute to
B. attend to
C. contribute to
D. devote to

[单项选择]As is well known, eating too much fat can（）heart disease and cause high blood pressure.
A. add to
B. attend to
C. contribute to
D. apply to

[填空题]If a child is putting on too much body fat, he should limit those energy-dense, nutrient-poor______.

[单项选择]
How much lead is harmful Until the 1970s, exposure to lead was considered dangerous only at blood levels associated with extreme symptoms of poisoning: convulsions (惊厥), brains swelling, acute kidney disease, stomach pains and hallucinations (幻觉). But low -level lead poisoning can cause symptoms that, while subtle, are no less serious. As a result, the CDC has continually lowered the point at which patients should be treated for lead poisoning.
One of the most influential study of lead’ s low - level effects was published by Herbert Needleman, professor of psychiatry at the University of Pittsburgh Medical School. Testing first and second grade students in the Boston area, he found the lowest I. Q. , academic achievement, language skills and attention span among children with the highest tooth levels (起损害作用的量) of lead. "None of their lead levels exceed the CDC’s 1979 toxicity threshold. "Says Paul Mu
A. the amount of exposure was large.
B. it caused extreme symptoms of poisoning.
C. it caused symptoms whether serious or not.
D. poisoning had led to death among the poisone

[单项选择]

It is indeed unfortunate that in our modern era of technologic and scientific achievement, there is no adequate explanation for a seemingly simple question: "why do people become too fat and what can be done to prevent it" about 50 million men and 60 million women between the ages of 18 and 79 are "too fat" and need to reduce excess weight. This amount to about 377 million kg of excess fat for men and 667 million kg for women, or a total of t044 million kg (2297 million 1b) for the United States adult population! If the overfat men and women dieted by consuming 600 fewer calories each day to reduce to a "normal" value of body fat (achievable in 68 days for men and 101 days for women), the reduced caloric intake would equal 5.7 trilling calories. Translating this into fossil fuel energy and considering such factors as the energy required to plant, cultivate, harvest, feed, proce
A. Right
B. Wrong
C. Not mentioned