— Have you finished your housework ________ , Lin Tao?
— Yes. I've done that ________ .
A：yet; already
B：already; yet
C：ever; never
D：still; just
直角三角形两锐角的平分线相交得到的钝角为（ ）
某海域海底发生地震时，位于该海域的海轮将出现（ ）
