What do you think is the best way _____ learning English? [ ]
A. of
B. for
C. in
D. with
答案:A
霍乱可有
A.脓血粘液便,伴发热、腹痛B.果酱样便,伴腹痛C.米泔水样便,无痛性D.粘液便,伴发热、腹痛E.黄色水样便,伴发热、腹痛
在窗体上有几个对象,运行程序时,当对象得到焦点时,会触发【 】事件,当对象失 去焦点时将触发【 】事件。