The government has made laws to protect animals，so the number of the endangered animals ________ in recent years.

A．had grown　

B．grew

C．has grown　

D．is growing

下面rotate函数的功能是：将n行n列的矩阵A转置为A’,例如： 1 2 3 4 1 5 9 13 5 6 7 8 2 6 10 14 当A = 9 10 11 12 则 A’= 3 7 11 15 13 14 15 16 4 8 12 16 请填空。 #define N 4 void rotate(int a[] [NJ ) { int i,j,t; for ( i=0; i＜N; i++ )for(j=0; ______;j++){ t=a[i] [j]; ______; a[j] [i]=t;} }