甘味药一般具有的作用是()
A.补益
B.和中
C.调和药性
D.收涩
E.缓急
参考答案:A, B, C, E
Many trees _____ on the hill next year. [ ]
A. is planted
B. plants
C. have planted
D. will be planted
“黄梅时节家家雨,青草池塘处处蛙”,雄性青蛙鸣叫的目的是 [ ]
A.招引雌蛙
B.寻找食物
C.练习发音
D.逃避敌害