题目

It is too early in the _____ to expect many visitors to the city.A. timeB. hour   C. seasonD. term 答案：D 解析: 本句考查too..to...结构。如图，甲所示的钢丝钳，其中A为剪钢丝处， B为手的用力点，O为转动轴，图乙是单侧钳柄及相连部分示意图。请在乙图画出动力F1、阻力F2、动力臂L1、阻力臂L2