第一节 语法和词汇知识（共15小题；每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21．Zhouzhuang is really a fantastic old town with a lot of beautiful __________．
A．description B．architecture C．souvenir D．invention
22．Although against my opinion, the old professor sitting next to me didn't _______ his own one．
A．come up with B．put up with C．catch up with D．keep up with
