The ability ______ a mental record of earlier experiences is referred to as "memory".
A. of retaining
B. for retaining
C. to retain
D. that retains
引起鹅口疮的致病因素是
A. 细菌
B. 病毒
C. 真菌
D. 原虫
E. 过敏
Experts assert that almost all the products that television sells are products that people
A. shouldn"t be consumed
B. shouldn"t consume
C. needn"t have been consumed
D. couldn"t have been consumed
微信支付 
支付宝支付