36.3×5.5+6.37×55．
36.3×5.5+6.37×55，
=（36.3+63.7）×5.5，
=100×5.5，
=550．
巩膜发育完全的时间是（）。
A.胚胎第9个月
B.胚胎第5个月
C.胚胎第3个月
D.胚胎第8个月
E.以上都不是
–Do you know Henry didn’t win that speech contest？
--_________? I thought for sure he would. He worked so hard on it.
A．Do I
B．Don’t I
C．Did he
D．Didn’t he
