1、单选题：
Epidemiologist means（ ）.
选项：
A:药理学家
B:植物学家
C:流行病学家
D:临床医生
答案: 【流行病学家】

2、单选题：
Most cruciferous vegetables had a 70 percent lower risk of （ ） cancer than those who ate the least of such vegetables.
选项：
A:gastrointestinal
B:pancreatic
C:colon
D:breast
答案: 【colon】

3、多选题：
β-carotene, concentrated in ( ) vegetables such as carrots, sweet potatoes and spinach.（ ）.
选项：
A:red
B:deep green
C:orange
D:yellow
答案: 【deep green;
orange;
yellow】

4、判断题：
Certain foods can block the chemicals that initiate cancer.（ ）
选项：
A:错
B:对
答案: 【对】

5、判断题：
Antioxidants can snuff out oxygen free radicals and can even repair some of the cellular damage that has been done. （ ）
选项：
A:对
B:错
答案: 【对】

6、判断题：
Research suggests that frequent consumption of fruits and vegetables can cut the risk of lung cancer even in smokers. （ ）
选项：
A:错
B:对
答案: 【对】

7、判断题：
β-carotene had an indirect toxic effect on cells taken from malignant tumors.（ ）
选项：
A:对
B:错
答案: 【错】

8、判断题：
According to the text, those who eat more onion and garlic are less prone to gastrointestinal cancer. （ ）
选项：
A:错
B:对
答案: 【对】

9、判断题：
Garlic can not antagonize existing cancer.（ ）
选项：
A:对
B:错
答案: 【错】

10、判断题：
Citrus fruit an all-around cancer package because it possesses every class of natural substances. （ ）
选项：
A:对
B:错
答案: 【对】

11、判断题：
Feeding animals cabbage and collard greens 羽衣甘蓝, along with a high-fat diet, reduced the incidence of mammary cancers.（ ）
选项：
A:错
B:对
答案: 【错】