20°W和160°E组成的经线圈是南北半球的分界线。[ ]
×
伤寒发病第一周用于细菌分离培养标本为（）
A.血液
B.尿液
C.粪便
D.骨髓
E.痰
—Is Maria eleven years old?
—______. [ ]
A. Yes, she does
B. No, she isn't
C. No, she doesn't
D. She is twelve
