能杀虫止痒的药物有（）
A.硫黄
B.白矾
C.蛇床子
D.土荆皮
E.升药
参考答案：A, B, C, D
Could you tell me if there are any restaurants ______ we can have our lunch? [ ]
A. around which
B. from which
C. around where
D. from where
受精卵正常的着床位置在 （ ）
A．子宫
B．输卵管
C．腹腔
D．卵巢
