题目内容

听力原文: HOLLYWOOD
Hollywood is a suburb of the city of Ios Angeles in California. / Until 1908 it was no more than a quiet viilage on the northern side of the city,/but in that year William Selig, one of the fist people to make films,/ set up a film-producing workshop in Los Angeles. / By 1911, David and William Homely had set up another one in Hollywood,/and at about the same time oil was discovered in the neighborhood./2bus Hollywood quickly became a big district given over to the film industry and to oil wells. /
The early makers of films found Hollywood a good place for their work/because of its dear, sunny, rainfree weather,/which allowed pictures to be taken all the year round./Also, it was known that every kind of scene needed for films could be found within the area of California./
(1)

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下面程序的输出结果是【 】。
inclde<iostreamn>
include<math>
using namespace std;
class point
{
private:
double x;
double y;
public:
point(double a,double b)
{
x=a;
y=b;
}
friend double distance(point a,point b);
};
double distance(point a,point b)
{
return sqrt((a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y));
}
int main()
{
point p1(1,2);
point p2(5,2);
cout<<distalice(p1,p2)<<endl;
return 0;
}

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