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A． before B． after C． since D． when
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A．limitB．cause C．force D．threat
Study Confirms Red Meat Link with Bowel (结肠) Cancer
People who eat more than 160 grams of red or processed meat a day are 35 percent.
more. likely to develop bowel cancer than those who eat less________(51) 20 grams a day, according to one of the biggest nutrition investigations ever carried out.
The European Prospective Investigation into Cancer and Nutrition followed 478,040 men and women _________(52) 35 to 70 from 10 European countries.
All subjects were free of cancer at enrollment between 1992 and 1998, but
__________(53) an average follow-up of almost 5 years 1,329 bowel cancers had been
reported.
The subsequent analysis, published in the Journal of the National Cancer Institute, confirms the long-held suspicion ________(54) high intakes (纳入量) of red meat are associated with increased bowel _________(55) risk.
After taking into consideration factors like age, sex, height, weight, energy intake, physical activity, smoking, and alcohol consumption, the investigators found that bowel cancer was ________(56) with intake of red and processed meat but not chicken.
Risk of bowel cancer dropped with increasing intake of fish. Eating more than 80 grams a day of fish was associated __________(57) a 31 percent reduction in risk
Compared with eating less than 10 grams a __________(58).
Subjects with high red meat and low fish intake were at 63 percent higher risk of bowel cancer compared with subjects with low red meat and high fish_________(59). In addition, the risk of developing the disease was increased for_________(60) people who ate a low fibre diet.
Sheila Bingham, study investigator at the UK's Medical Research Council nutrition unit, said: "People have suspected for some time that high levels of red and processed meat___________(61) risk of bowel cancer, but this is one of the largest studies worldwide and the first from Europe of this type to show a ________(62) relationship."
She added in a statement: "The overall picture is very consistent for red and
processed meat and fibre across all the _________(63) populations studied."
Study coordinator, Elio Riboli, of the World Health Organisation International Agency for Research into Cancer, said: "Other risk factors for __________(64) cancer include obesity (肥胖) and lack of physical activity. Smoking and excess alcohol may also play a__________(65). These factors were all taken into account in the analysis."
第 51 题
根据下列条件，回答 56～58 题：
某三层端部墙窗洞处立面如题图所示，窗洞宽1.20m，外纵墙上搁置长向板，板底距离上皮0.72m，板上有女儿墙。若外纵墙墙厚370mm(墙面自重标准值为7.78kN/m2)。已知传至10.72m标高处的荷载设计值为31.3kN/m。采用MUl0砖，M5混合砂浆。
第 56 题 该过梁的跨中弯矩和支座剪力设计值最接近（）项数值。
按照公司成长型划分，可以将股票分为（）。
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