_____sufficient historical and legal grounds, China's position on the South China Sea has been consistent and clear.
| A．Associated with | B．Based on |
| C．Centered around | D．Assessed by |
The environmentalist at last reached _____ was once an industrial area where he did a field survey.
| A．what | B．that |
| C．where | D．which |
When my father and I traveled to Shanghai, he asked me to take a picture of him ______ stands the famous Oriental Pearl TV Tower.
| A．that | B．where |
| C．which | D．there |
If he ____ the book before, Jack would be able to tell us something about the story now.
| A．read | B．would read |
| C．was reading | D．had read |
----What's your ____ towards working on the weekends?
----I am strongly against it.
| A．impression | B．attitude |
| C．courage | D．opinion |
The industry is to the national economy. It is expected to account for 38.4% of our country's GDP by 2015.
| A．valuable | B．vague | C．vital | D．valid |