一》Theprofessorcouldhardlyfindsufficientgrounds____hisargumensinfavourofthenewtheory.A)tobebasedonB)tobasedonC)whichtobaseonD)onwhichtobase这道题的答案为什么选D不选C?二》devise和design有什么区别?三》有什么输入法能够智能输入英文单词?