第二部分 语言知识及运用（共60分）
第一节 单项选择（选出最佳选项。共10小题；每题1分，满分10分）
16.He _____have solved all his problems; otherwise, he wouldn’t be so relaxed.
A. should B. must C. wouldn’t D. can’t
17. Issac Newton, ____ schooling was unsuccessful, became a very famous inventor.
A. who B. whose C. whom D. which
18. Children under six are not _____ to school except those of extraordinary intelligence.
A. permitted B. admitted C. accepted D. received
