绒毛膜癌最常见的死亡原因是（）
A.肺转移
B. * * 转移
C.胸腔转移
D.胃肠道转移
E.脑转移
参考答案：E
一、二两班共有95 人，体育锻炼的平均达标率( 达到标准的百分率) 是60 ％．如果一班的达标率是40 ％，二班的达标率是78 ％，则一班、二班各有多少人?
19. At that time, people_____early in the morning in winter, and coal them warm.
A．used to get up; used to keep
B．were used to getting up; was used to keep
C．used to get up; was used to keeping
D．were used to get up; was used to keep
