问题

However, at times this balance in nature is disturbed, ____ a number of possibly unforeseen effects.

A:lying in
B:calling in
C:existing in
D:resulting in

正确答案是：

同类题型

r Wen Jiabao paid a visit to the drought-hit southwesternChina, inspires the people

Help ________ to some beef, Lucy and Lily. It’s very delicious.

填入下面一段文字横线处的语句，最恰当的一句是（）血栓闭塞性脉管炎又称“脉管炎”，虽是一种血管的炎症，但并不是细菌感染引起的的，而是血栓阻塞血管、血流减少所致，主要以下肢为主。脉管炎后期可引起手足发黑、坏死。但，如果在早期能明确诊断，及时治疗，可以避免发生严重的后果。

Jeff’s sister can’t swim _____dance.

We really shouldn’t use paper napkins, you know.– I know. I stopped _____ last year.