[填空题]Researchers have found summer depression is more common in people living in Alaska.

[填空题]Researchers have found summer depression is more common in people living in Alaska.

[填空题]Researchers have found more evidence that suggests a relationship between race and rates of lung cancer among smokers. Some (26) have shown that blacks arc more likely than whites to get lung cancer from smoking.
Researchers at the University of Southern California and the University of Hawaii did the new study. The New England (27) of Medicine (28) the findings.
The eight-year study (29) more than one hundred eighty thousand people. They provided (30) about their tobacco use and their diet as well as other information. They included (31) and former smokers and people who never smoked. Almost two thousand people in the study developed lung cancer.
Researchers say (32) might help explain the racial and ethnic differences. There could be differences in how people’s bodies react to smoke. But (33) influences, including the way people smoke, could also make a difference.
Afri

[单项选择]A. They found that male brains have more connections on one side of the brain while female both.
B. They found that men are more straightforward than women.
C. They found that men are more persistent than women.
D. They found that women are more efficient than men are in problem solving.

[单项选择]