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
