21. As is known to all,
______ opening ceremony of the 26th Shenzhen Universiade was ______ great success.
[2011厦门高一检测]
A. /; a B. the; a C. the; / D. a; /
22. People have always been curious ______ how living things on the earth exactly began.
A. in B. at C. of D. about
23. As we know, the rose ______ England.
A. presents B. represents
C. expresses D. suggests
