“槛外低秦岭，窗中小渭川”是（），表达了诗人登高远望，游目骋怀的气度。
A.形容词活用
B.动词活用
C.名词虚指
D.数词泛用
参考答案：A
根据首字母完成单词。
1. I'm taking a v______ in Hong Kong next year.
2. I didn't have a camera, so I r______one when I went sightseeing in Hawaii last summer.
3 . I waited u______ 11 last night, but he didn't get back.
4. I s______ half an hour watching TV last night.
5. When did your sister get b______ from Thailand?
一条小船顺流航行50 km后，又立即返回原地。如果船在静水中的速度为akm/h ，水流的速度为8 km/h ，那么顺流航行比逆流航行少用多少小时？
