练习:
1. Breastfeeding helps women prevent the development of breast cancer to a certain degree.
A Right B Wrong C Not mentioned
2. Estrogen may contribute to the development of breast cancer as much as hormone
replacement therapy.
A Right B Wrong C Not mentioned
3. The amount of red meat a woman eats is directly proportional to the probability of breast cancer.
A Right B Wrong C Not mentioned
4. The way red meat is prepared has much to do with the probability of breast cancer.
A Right B Wrong C Not mentioned
5. Any kind of iron in the food is a contributor to the development of breast cancer.
A Right B Wrong C Not mentioned
6. Resveratrol is the fourth factor recently found that causes a breast cancer to develop.
A Right B Wrong C Not mentioned
7. Any kind of wine contains resveratrol.
A Right B Wrong C Not mentioned
答案与题解:
1.A 第二段第一句明确说到喂奶可以减少妇女患乳腺癌的危险性。
2.B 第二段说激素补充疗法会增加患乳腺癌的危险性,而第三段说到雌激素时只说到它是供给身体发育的,并未提到它会触发乳腺癌,两者是不能相提并论的。
3.A 第四段尤其是最后一句已是结论性的话,红肉吃的多,患乳腺癌的可能性就大,反之就小,故成正比。
4.A 倒数第三段列出了研究人员过去认为可能吃红肉致乳腺癌的三个原因,其中第一个就是红肉的烹调方法。
5.B 同样倒数第三段中列出的第三个因素就是红肉中所含的铁的种类,言下之意是有些类型的铁致癌,有的就不致癌,因此说所有食物中的铁都致癌显然是错的。
6.B 倒数第二段说到,食用大量白藜芦醇这种植物的混合物老鼠就会长寿,最后一段又说到白藜芦醇能提高肌肉的功能。这些都是正面的、积极的作用,并没有说它能致癌。
7.C 倒数第二段只说红酒中含有白藜芦醇,并没有说其他酒类有还是没有。
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