题型:填空题 His mother suggested he ______ to see the doctor, because his pale face suggested he ____ ill.A.would go, had been B.go, wasC.went, had been D.must go, was 查看答案
题型:填空题 如图所示,测力计、绳子和滑轮的质量都不计,摩擦不计。物体A重40N,物体B重10N。以下说法正确的是:( )A.测力计示数10 NB.测力计示数20 NC.测力计示数30 ND.测力计示数40 N 查看答案