問題詳情
Many doctors and scientists believe that there are different causes for the different forms of cancer. Working conditions may __51__ cancer. For example, people who work in __52__ contact with chemical compounds like arsenic or asbestos may develop cancer. People who work for long periods of time with X-rays or radioactive material may get leukemia or cancer of the skin, bone or lungs. Smoking is __53__ cause of cancer. Many experiments have shown that smoking can produce lung cancer as well as cancer of the mouth, larynx and esophagus. __54__, viruses may cause cancer. Scientific research has shown that viruses bring about certain kinds of cancer in laboratory animals. Scientists are now trying to find out 55 true for humans as well. Although we don，t have the answer yet, perhaps in the near future we will know what causes this disease.
【題組】51.
(A) result from
(B) build up
(C) count on
(D) lead to
參考答案
答案：D
難度：簡單0.762763
統計：A(53),B(16),C(10),D(254),E(0)
用户評論
【用戶】Lynn
【年級】高一下
【評論內容】result from 由於..導致build up 建立count on 指望、依靠lead to 導致
【用戶】Lynn
【年級】高二下
【評論內容】result from 由於..導致build up 建立count on 指望、依靠lead to 導致