A．A comparison of fish as a cold-blooded animal with warm-blooded animals.
B．The difference between water animals and land animals.
C．The importance of fish to human beings.
D．How water has affected the development of fish.

A．It can't be compressed.B．It's often polluted.C．Its temperature often fluctuates.D．It limits their size.

A.It
B.
B．It's
C.
C．Its
D.
D．It
E.

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以下程序中，函数fun的功能是计算x2(上标)-2x＋6，主函数中将调用fun函数计算： y1=(x＋8)2(上标)-2(x＋8)＋6 y2=sin2(上标)(x)-2sin(x)＋6 请填空。 include 'math.h' double fun(double x){ return (x*x-2*x＋6);} main() { double x,y1,y2; printf('Enter x:'); scanf('%1f',&x); y1=fim([ ]); y2=run([ ]); printf('y1=%1f,y2=%1f n',y1,y2); } 点击查看答案