A:第一象限
B:第二象限
C:第三象限
D:第四象限
物体排开水的体积为2×10-3m3,求它所受的浮力F浮。
解方程:x2﹣6x﹣5=0
I hear there is _____panda in the zoo, and I want to take _______ bus to see it.