在4×6=24中,( )和( )是24的( )。24是( )和( )的( )。
4;6;因数;4;6;倍数
The environment in our town is getting worse and worse, so many trees _______. [ ]
A. are planting
B. should be planted
C. should plant
D. will plant
对铅中毒病人治疗首选药物是()。
A.二巯基丙磺酸钠
B.补血合剂
C.依地酸二钠钙
D.阿托品
E.葡萄糖酸钙