《灵枢·本神》指出：“心，……则伤神。”（）
A.愁忧不解
B.盛怒不止
C.悲哀动中
D.喜乐无极
E.怵惕思虑
参考答案：E
There _______ less air pollution in the country .
A．are
B．is
C．have
D．has
句型转换。
1. Is the book under the sofa? (做否定回答)
______, ______.
2. The keys are on the dresser. (对画线部分提问)
______ ______ the keys?
3. Is it in the backpack? (改为复数形式)
______ ______ in the backpack?
4. I know the teacher. (改为否定句)
I ______ know the teacher.
5. They are on the sofa. (改为一般疑问句)
______ ______on the sofa?
