Why do cold coastal currents create deserts A: They prevent the accumulation of rain clouds. B: They make it too cold for plants to grow. C: They cause the rain-shadow effect to occur. D: They keep moisture contained on a continent’s western edge.

如何将/etc/shadow文件的权限修改成（） A: chmod400/etc/shadow B: chmod510/etc/shadow C: chmod440/etc/shadow D: chmod420/etc/shadow

【单选题】为场景添加阴影效果应该勾选什么选项？ A. Shadow Type B. Shadow Soft C. Shadow Hard D. Soft Shadow

____for a long time, the fields are all dried up.A. There has been no rain  B. Having no rain C. There having been no rain D. There being no rain A: A. There has been no rain  B: B. Having no rain  C: C. There having been no rain D: D. There being no rain

______, the workers continued their work in the open. A: Heavy as was the rain B: As the rain was heavy C: As heavy was the rain D: Heavy as the rain was

- Let's go to the community if it ____ tomorrow. - But nobody knows if it ______ tomorrow. A: won't rain; rains B: doesn't rain; rains C: doesn't rain; will rain D: won't rain; will rain

Look at the clouds. It （）. A: will be mining B: is to rain C: is going to rain D: will rain

So heavy () that we were prevented from going out. A: the rain was B: is the rain C: was the rain D: would the rain be

They will go to the zoo if it _______ tomorrow. A: won't rain B: doesn't rain C: isn't rain D: not rain

47. The dark clouds in the sky suggested that it ____ soon. A: rain B: would rain C: should rain D: is going to rain