二、选择填空(共25小题;每小题1分,满分25分)
A)单项填空(共15小题;每小题1分,满分1 5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。
16. Hiking is _______great fun. You will get close to _______nature and take exercise at the same time.
A. a; the B. a;/. C./; the D./;/
17. Today it's becoming more and more important for students to learn to teach _______.
A. himself B. themselves C. him D. them