问题 多项选择题

与癌变有关的寄生虫有()

A.肺吸虫

B.丝虫

C.华支睾吸虫

D.肝包虫

E.血吸虫

答案

参考答案:C, E

解析:华枝睾吸虫与原发性肝癌特别是胆管细胞癌有关,血吸虫与结肠癌有关。

综合

读图及下表,回答下列问题:

地点
海拔高度(米)17143760.858.9
年均温(度)36-2.222.321.8
年均降水量(mm)610.8339.82047.51680

(1)说明①、④两地年均温和年降水量差异的原因。                                                                                                                                                                                                                                                                                                                              (2)分析①地降水量高于②地原因。                                                                                                                                                              (3)分析③和④地年均温接近但降水量差异较大的原因。                                                                                                                                                              

单项选择题