计算2a-3(a-b)的结果是[ ]
A.-a-3b
B.a-3b
C.a+3b
D.-a+3b
答案:D
— But for your timely warning, we _____ into great trouble.
— Well, you know we’re friends.
A.would get
B.must have got
C.would have got
D.can’t have got
下列关于“过犹不及”的理解正确的是( )。
A.体现了质量互变的客观规律 B.“过”是指在“质”上的超过C.应当将事物的改变都控制在量变 D.质变之时,量变停止