______there is little we can do to modify the weather, we can at least know what kind of weather to expect.
【正确答案】 D
【答案解析】解析:句意:我们现在很难做到改变天气,但至少我们能了解预期的天气状况。while在此作并列连词,意为“而,却”,表示对照关系。故选D。