题目

 We should not _________ content ourselves with delicious meals, but we should also attach more importance to the balance of diet.     A. apparently            B. merely                  C. passively                D. eventually 答案：B如图, 滑轮, 绳子质量和一切阻力不计, 若M≠m, 则弹簧秤读数是 [　　]  A.小于(M+m)g　　　　　　  B.等于(M+m)g     C.大于(M+m)g　　　　　　  D.等于(M-m)g