胎儿头皮与颅骨间距增宽呈低回声，躯干、四肢、皮肤与皮下组织分离呈双线样，横切呈双环征是下列哪种病变的声像图特点

A．脑积水

B．头皮水肿

C．胎儿水肿

D．脑膜膨出

E．无脑儿

The trade union intended to call on the workers to go on strike ________ the government's limitation

on exports. [ ]

A. in memory of  

B. in honor of

C. in response to  

D. in need of