A：3 2 - 2 =3
B：2 + 3 = 5
C：27÷3=3
D：2 3−33=63
“尽道隋亡为此河，至今千里赖通波”是颂扬隋朝大运河的句子，句中“河”的最北端就是现在的（ ）
请站在我的旁边。 (next to)
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— You'd better ________ work too hard like this.
— I see. You mean working too hard makes one tired and ill.
