下列哪项可用于胎儿遗传性疾病的宫内诊断
A．羊水AFP
B．妊娠早期绒毛活检
C．B型超声检查羊水量
D．羊膜镜
E．羊膜腔胎儿造影
参考答案：B
首先成功地开创了东西方之间最短海上线路的航海家是（）
A．迪亚士
B．达•伽马
C．哥伦布
D．麦哲伦
84. They’d like to see her daughter ____________, get married and have kids.
A．settle on
B．settle up
C．settle for
D．settle down
