A:长臂猿
B:大猩猩
C:黑猩猩
D:森林古猿
The________expression on his face suggested that he was________at the extraordinary beauty of the picture.
— Where ____ (am/is/are)Tim and Tom?
— In the library.
在平面直角坐标系中,横坐标、纵坐标都为整数的点称为整点.观察图中每一个正方形(实线)四条边上的整点的个数,请你猜测由里向外第10个正方形(实线)四条边上的整点个数共有____个。