题目

Paul doesn’t have to be made         . He always works hard.   A. learn    B. to learn C. learned  D.learning 答案：B 下列单位换算正确的是 [　　] A．1.5 m＝1.5×100＝150 cm B．1.5 m＝1.5 m×100＝150 cm C．1.5 m＝1.5×100 cm＝150 cm D．1.5 m＝1.5 m×100 cm＝150 cm