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一、填空题（每空1分，共31分）1．光在真空中的传播速度是．米／秒；一个标准大气压的数值是＿＿＿＿帕；一节干电池的电压是＿伏；人体的正常体温是37t，读作＿．．2．蟋蟀是靠左右翅的摩擦发生的＿而发出清脆的叫声，这种叫声是通d＊．传到我们的耳朵里．3．当你从平面镜里
First, fill in the blank (1 point for each space, a total of 31 points) 1. The speed of light in vacuum is. m/s; the value of a standard barometric pressure is ____pa; the voltage of a dry cell is _V; the body’s normal body temperature is 37t, read as _. . 2.蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀 蟋蟀. Come to our ears. 3. When you go from the plane mirror