Since most Antarctic rocks are dark in color, they stood out _____ the white background and are easy to identify and collect.
| A．against | B．on | C．beyond | D．above |
Our government has taken some measures to overcome the lack of electricity, but it may take some time _____ we have enough power．
| A．since | B．after | C．unless | D．before |
Science and technolo
gy are advancing so quickly that _____ is a possibility today may be a reality tomorrow．
| A．that | B．which | C．不填 | D．what |
Each person has his / her unique character which ____ him / her from others．
| A．differs | B．distinguishes | C．divides | D．draws |
Shered with anger as soon as she heard the news that her favorite team had been defeated．
| A．went | B．came | C．stayed | D．remained |
—You didn’t take the high-speed train with the leading letter "G" to Shanghai?
—. I still took the "D" train, which saved me more than 50 yuan．
| A．Yes, I didn’t | B．No, I did |
| C．Yes, I did | D．No, I didn’t |