I had not listened to my mother's advice on taking an umbrella. Later that afternoon, I was nearly ______

the rain.[ ]

A. taken by

B. trapped in

C. caught in

D. beaten by

关于绒毛膜促性腺激素(HCG)，哪项是正确的

A．来自蜕膜、绒毛膜与羊膜的上皮细胞

B．为一种糖蛋白激素，由A、B两个亚基组成，A亚基有特异性

C．妊娠早期分泌量增加很快，孕8～10周达高峰，以后迅速下降

D．在妊娠早期替代垂体FSH功能，促使妊娠黄体发育

E．测定血HCG可作为上皮性恶性肿瘤的监测标记