Lung cancer is the No.1 cancer to kill American people. No cancer kills more American than lung cancer.

What kind of cancer may the sunlight protects us from? A: Stomach cancer. B: Skin cancer. C: Lung cancer. D: Blood cancer.

Metastasis from primary gastric cancer to liver should be called gastric metastatic liver cancer.

中国大学MOOC: Smoking has long been ________ lung cancer and even breast cancer.

People with no family history of cancer are unlikely to develop cancer.（） A: Right B: Wrong C: Not mentioned

Smoking has long been ________ lung cancer and even breast cancer. A: associated with B: related from C: built on D: broken down

Questions 5 to 7 will be based on the following news item.Question 5: A: The income gap is widening in developed countries. B: Cancer cases are increasing dramatically. C: Unhealthy foods can increase the risk of cancer. D: Burden of cancer is shifting to poor countries.

3. Which of the following sentence is right? A: The goal is to learn their risk of thyroid cancer the extent to which radiation may increase. B: The goal is to learn the extent to which radiation may increase their risk of thyroid cancer. C: The goal may increase their risk of thyroid cancer is to learn the extent to which radiation. D: The goal is to learn the extent to radiation which may increase their risk of thyroid cancer.

Below you will find some examples of study designs, please select the correct design for each example. The relation between total fiber intake and colon cancer was studied in 35492 male participants. Fiber intake was measured via food frequency questionnaires at the beginning of the study in 1988 and every two years thereafter prior to an endoscopic procedure to assess colon cancer. Between 1988 and 2006, 2099 colon cancer cases occurred. Occurrence of colon cancer was 39% higher in people with the lowest fiber intake as compared with people with the highest fiber intake. The study suggests that low intakes of fiber in men is associated with an increased risk of colon cancer. The study design is a:

Which of the following statements is true（） A: Freedom from responsibilities helps reduce stress. B: Stress is the direct cause of cancer. C: The cause of stress is worthy of serious study. D: Cancer is the number one killer in our society today.