该图表示天体系统的不同级别，则该图表示的天体系统有
| A．4级 | B．3级 | C．2级 | D．1级 |
The temperature can fall to －50°C. _____ is, 50°Cbelow freezing point.
A. Which B. It C. This D. That
Since then I a member of the family and never from them.
| A．have be come; will I separate |
| B．have be come; I will separate |
| C．have been; will be separated |
| D．have been; I was separated |
---Will you please spare me a few minutes to accept my interview, Mr Yang Liwei now?
---________. But I’ll be free this evening. Would you mind?
| A．No, I don’t | B．Yes, with pleasure |
| C．I’m afraid not | D．Yes, I’d be glad to |
Some famous singers live on the _________ from their record sales.
| A．salary | B．value | C．bill | D．income |
The World Trade Organization (WTO) finally opened its door to China on November 10, ______ our Chinese 15-year wait.
| A．to end | B．ended |
| C．ending | D．ends |