Over（）science parks have been set up by higher education institutions in conjunction with industrial scientists and technologists.<br>A:10<br>B:20<br>C:30<br>D:40

Over（）science parks have been set up by higher education institutions in conjunction with industrial scientists and technologists.
A:10
B:20
C:30
D:40

出自：00522《英语国家概况》

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