经腹扫查,妊娠几周可显示妊娠囊结构()。
A.2~3周
B.7~8周
C.5~6周
D.9~10周
E.10周以上
参考答案:C
上网完全实名制不是明智的选择。
I will never know what was on his mind at the time, nor will________.
A.anyone
B.anyone else
C.no one
D.no one else