具有增效作用的配伍关系是（）
A.相反
B.相须
C.相恶
D.相杀
E.相使
参考答案：B, E
用所给词的适当形式完成句子。
1. This ____________ (be) a beautiful forest.
2. Hello, you ____________ (be) a big bird.
3. It is ____________ (I) old deer.
4. All goats have ____________ (beard).
5. Nice to ____________ (meet) you!
More and more foreign students come to China to learn _____ Chinese. [ ]
A. a
B. an
C. the
D. /
