There is plenty of rain in the southeast, there is little in the northwest.
A. because
B. therefore
C. while
D. as
网友回答
A. because
B. therefore
(答案→)C. while
D. as
解析：考查连词：A. because因为，B. therefore因此C. while然而，虽然，D. as 正如，根据句义“东南部雨水多，西北部几乎没有”，A、B和D三个选项放在句中意思不通。while有“虽然”的意思，可以放在句中，表示转折。选C。