题目

Though he had often made his sister _____, today, he was made _____ by his little sister.  A. cry; cry           B. cry; to cry      C. crying; crying    D. to cry; cry 答案：B19．小明在上体育课时，通过一些活动联想到学过的物理知识，你认为下列联想错误的是（　　）A．“引体向上”的同学握住单杠悬空静止了1秒，在这1秒内重力对他没做功B．“踢足球”利用了力使物体运动状态发生改变的道理C．“仰卧起坐”利用了大气压的道理D．“单杠表演时手上搓镁粉”利用了增大摩擦的道理