[填空题]It is so ______ (gloom) in the cave that we need to take a light.

[填空题]It is so ______ (gloom) in the cave that we need to take a light.

[单项选择]（　） we need air and water, so we need criticism and self-criticism.
A. Even though
B. So long as
C. Just as
D. Now that

[单项选择]Because our work is very busy, so we need to relax at midday.
A. We are very busy,
B. Our work being busy,
C. Our work so very busy,
D. Because our work so very busy,

[简答题]So we need your help as well. You’re here because you are already committed to identifying and investing in innovative solutions to persistent global problems. So today, I ask you to join us, to be a part of this solution, an issue that brings together so many of our concerns. Whether you’re passionate about health or the environment or sustainable development or women’s empowerment, this is a project for you, and we need you.

[单项选择]We hadn’t expected a power cut so we were astonished when the whole house was ______ into darkness.
A. dived
B. plunged
C. drowned
D. dropped

[简答题]We are playing the game just for fun, so we don’t have to ________(遵守这些繁琐的规则).

[填空题]So we asked our friends to help us. So we asked our friends ______ ______.

[填空题]So we asked our friends to help us.
So we asked our friends ______ ______.

[填空题]We couldn’t afford to buy a house, so we ___________________(以银行代款的方式买下来，每月付款).

[填空题]We couldn’t afford to buy a house．so we ______(以银行贷款的方式买下来，每月付款)．

[填空题]Why do you need food We need food for ______.

[单项选择]

We are so used to our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted. Because we can feel that things are heavy, we think of "weight" as being a fixed quality in an object, but it is not really fixed at all. If you could take a one-pound packet of butter 4,000 miles out from the earth, it would weigh only a quarter of a pound.
Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space The reason is this: All objects have a natural attraction for all other objects; this is called gravitational attraction. But this power of attraction between two objects gets weaker as they get farther apart. When the butter was at the surface of the earth, it was 4,000 miles from the center. When we took the butter 4,000 miles out, it was 8,000 f
A. 1 pound.
B. 2 pounds.
C. 3 pounds.
D. 4 pounds.