汽车下长坡时，自动变速器可以使用的手柄位置是（）。
A.N和1
B.1和2
C.D和2
D.OD和D
参考答案：B
用所给词的适当形式填空。
1. Look!The cat is ________ (sit) on your chair.
2. My family ________ (be) a big one.
3. Li Ming often ________ (do) homework at 7:00 in the evening.
4. I think you have too many ________ (cloth).
5. Lily often ________ (have) breakfast at 6:00 in the morning.
6. Look at this picture.I am ________ (eat) an apple.
安全阀是炼油厂中使用的惟一一种安全泄压装置。
