题目

Some students lost marks in the exam ________ because they didn’t read the questions properly.        A. simple        B. simply               C. hard           D. hardly 答案：B（1）在图中，弹簧测力计的读数是4.64.6N．（2）正在空中飞行的物体A重50N，在图中画出物体A所受重力的示意图．