A25964. Arduino UNO/Nano主控板，读取超声波传感器的返回值，下列选项中正确的程序段是？（ ）

digitalWrite(4，LOW);
delayMicroseconds(2);
digitalWrite(4，HIGH);
delayMicroseconds(10);
digitalWrite(4，LOW);
float dist=pulseIn(5，LOW)/58.0;

digitalWrite(4,LOW);
delayMicroseconds(2);
digitalWrite(4,HIGH);
delayMicroseconds(10);
digitalWrite(4，LOW);
float dist=pulseIn(5，HIGH)/58.0;

digitalWrite(5,LOW);
delayMicroseconds(2);
digitalWrite(5,HIGH);
delayMicroseconds(10);
digitalWrite(5,LOW);
float dist=pulseIn(4,LOW)/58.0;

digitalWrite(5,LOW);
delayMicroseconds(2);
digitalWrite(5,HIGH);
delayMicroseconds(10);digitalwrite(5,LOW);
float dist=pulseIn(4，HIGH)/58.0;