H3C可选的RAID缓存卡有（）
A.2G缓存卡
B.1G缓存卡
C.256M缓存卡
D.512M缓存卡
参考答案：A, B, D
He is happy because I have made_____ mistakes in the test this time than last time.
A．much more
B．more many
C．much fewer
D．even less
莲的根状茎称莲藕，莲的（）称莲蓬。
A.花托
B.花被
C.子房
D.花序轴
