若两圆的半径分别为2和4，且圆心距为7，则两圆的位置关系为( )
A：外切
B：内切
C：外离
D：相交
A. Because l can go swimming. B. These books are Tom's C. Yes, it is.
D. She is shopping E It's near the school.
①蜜蜂采蜜 ____ A．生殖行为
②蜻蜓点水 ____ B．觅食行为
③乌贼喷墨 ____ C．迁徙行为
④家燕南飞 ____ D．防御行为
选择最佳应答语（ ）
