题干
Summer is _______ good time for swimming, so you can find a good coach to help you in _______ summer of 2010.
A：a; the
B：/; /
C：a; /
D：/;the
答案(点此获取答案解析）
A
A：a; the
B：/; /
C：a; /
D：/;the
，直线
所围成的平面图形的面积为（ ）