题目内容：
共用题干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_________(1)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________(2)35 to 70 from 10 European countries.
All subjects were free of cancer at enrollment between 1992 and 1998,but______
(3)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________(4) high intakes（纳入量）of red meat are
associated with increased bowel_________(5)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________(6)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________(7)a 31 percent reduction in risk compared with
eating less than 10 grams a________(8）.
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_________(9).In
addition,the risk of developing the disease was increased for_________(10)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
________(11)risk of bowel cancer,but this is one of the largest studies worldwide and
the first from Europe of this type to show a________(12)relationship."
She added in a statement:"The overall picture is very consistent for red and processed
meat and fibre across all the________(13)populations studied."
Study coordinator,Elio Riboli,of the World Health Organisation International Agency for
Research into Cancer,said:"Other risk factors for_________(14)cancer include
obesity（肥胖）and lack of physical activity. Smoking and excess alcohol may also play a
________(15).These factors were all taken into account in the analysis."
_________(13)
A: Asian
B:American
C: European
D:African
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