人患曼氏裂头蚴病是由于误食了含活的裂头蚴的______，________，______，_______的肉而引起。
参考答案：蛙；蛇；鸟类；猪
It is no use thinking about your ________ youth.
A．gone
B．lost
C．missed
D．losing
The Hengxin Square is located in ____________ used to be our canteen.
A．what
B．where
C．which
D．the place
