______, heat is produced.(2.0)
A. The mixing together of certain chemicals
B. Whenever certain chemicals are mixed together
Certain chemicals mixed together
D. That certain chemicals are mixed together
查看答案
-Did you remember to give Marie the money you owe her? -Yes. ______ I saw her, I remembered.(2.0)
A. While
B. The instant
C. Suddenly
D. Momentarily
No sooner had we reached the top of the hill ______ we all sat down to rest.(2.0)
A. when
B. then
C. than
D. until
-Do you know anyone in Chicago? -No, but I’ll make friends once ______.(2.0)
A. I’m settled
B. I’ll be settled
C. I’ve been settled
D. I had settled
______ people depend to such a great extent on forest, every effort must be made to preserve trees and wildlife.(2.0)
A. How
B. That
C. Since
D. Which