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【简答题】
25℃时将半径为1mm的水滴分散成半径为10 -3 mm的小水滴，此时水的表面张力为72.8×10 -3 N·m -1 。问：比表面增加了多少倍?表面能增加了多少?完成该变化时，环境至少需要做功多少?
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【单选题】—My mother is preparing my favorite dishes. Go with me and have a taste, okay ? —___________ and I’ll be glad to meet your parents.
A.
I think so
B.
I’d love to
C.
I’m sure
D.
I hope so
【单选题】I’ll be publishing my results only when I have _________ my research.
A.
concerned
B.
connected
C.
conducted
D.
concluded
【单选题】-My mother is preparing my favorite dishes. Go with me and have a taste, okay? -________.And I'll be glad to meet your parents. [ ]
A.
I think so
B.
I'd love to
C.
I'm sure
D.
I hope so
【单选题】_______ I have to sell my house, I’ll keep my business going.
A.
Even
B.
As if
C.
If
D.
Even if
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