背水坡滑坡的抢护原则是“消除渗水压力,恢复堤身稳定”。
参考答案:对
用所给单词的适当形式填空。
1.—Did you go to the park yesterday? —No, I ________ (practice) the piano.
2. Steve ________ (take) the train to school every day.
3. I found a little girl ________ (cry) in the corner of the street.
4. We stayed at home on the ________ (rain) days.
5. When I got home from work, I was ________ (real) tired.
白果除敛肺平喘外,又能()。
A.清肠通便
B.降气止呕
C.收涩止带
D.润肺止咳
E.宣散风热