简述我国解决水土流失的主要措施?
参考答案:
1营建防护林;
2封山育林,建立自然保护区;
3在黄土高原和丘陵地区修筑梯田。
读图完成1~3小题:
1.图中C点的经、纬度是[ ]
A.(20°N,170°E)
B.(20°S,170°E)
C.(20°N,170°W)
D.(20°S,170°W)
2.图中B点所在的温度带是[ ]
A.热带
B.北温带
C.南温带
D.北寒带
3.图中A在C的[ ]
A.东南
B.西南
C.西北
D.东北
“I took part in the TOEFL. It was really hard.” “Did you ______ a lot?”
A.Have you studied
B.Did you study
C.Had you studied
D.Do you study