难复性腹外疝是指()。
A.疝内容物有血运障碍
B.疝内容物还纳时很慢
C.疝内容物与疝囊粘连
D.疝内容物还纳时疼痛
E.疝内容物是小肠
参考答案:C
—Would you _____ a game of table tennis, Cathy?
—I’d love to, but I still have piles of homework to do.
A.care for
B.care about
C.care to
D.take care of
跑步主要有()、()的作用。