16. The first part, it seems, _________ better written than the other parts.
A. being B. to be C. is D. 不填
答案选C，其中的 it seems 为插入成分，句子的基本结构是 The first part is better written than the other parts. 请看以下类例(www.hxen.com)：
(1) The cross-talk, I think, _________ both interesting and instructive.
A. being B. to be C. is D. 不填
(2) Life, in his opinion, _________ nothing but a dream.
A. being B. to be C. is D. 不填
(3) That dictionary, you know, _________ meant chiefly for Chinese students.
A. being B. to be C. is D. 不填
(4) The audience, more than one thousand of them, _________ up and applauded the singer.
A. standing B. to stand C. stood D. to be standing
答案均选C，其中的 I think, in his opinion, you know, more than one thousand of them 等均为插入语，做题时可以将其撇开不管。
17. We need someone with a fresh point of view, _________ can suggest changes.
A. that B. which C. who D. what
答案选C，who 引导的是非限制性定语从句，修饰 someone。注意其中隔有一个介词短语 with a fresh point of view(也是修饰 someone 的定语)。