问题
选择题
This CD-ROM can help you learn and have fun ______.
A.at times
B.on time
C.at the same time
D.in time
答案
答案:C
词义辨析。at times 有时,偶尔;on time按时,准时;at the same time同时;in time及时。句意:这种光碟能帮助你学习同时又很有趣。所以选C。