主要用于疟疾病因性预防的药物是()
A.乙胺嘧啶
B.奎宁
C.氯喹
D.青蒿素
E.伯氨喹
参考答案:A
许多外省劳动力纷纷到珠江三角洲“打工”,主要是珠江三角洲( )
A.加工制造业发展快
B.农业发展快
C.人少地多,劳力不足
D.气候宜人,风景独特
- Would you please take this workbook to the teacher's office for me?
-_______.
A.Never mind.
B.With pleasure.
C.That's right.
D.Don't mention it.