—Why not come and join us in the game?

—__________, but I must meet Mr Smith at his office now.

A．I’d like to.

B．Let’s go

C．Yes, please

D．It’s a pleasure

孕妇易患急性肾盂肾炎的原因是：

A．孕激素使输尿管蠕动增强

B．子宫增大后由盆腔进入腹腔，输尿管受压解除

C．子宫常向右旋，压迫右侧输尿管致扩张

D．排尿通畅不易发生尿潴留

E．孕中期输尿管及肾盂可积尿100～200ml之多