根据短文内容，选择正确答案。

    Peter always doesn't know the way. His friends often laugh at him. They say he needs a map to find the bathroom in his own house. In his eyes, every street looks the same, and he doesn't know which way to go. Sometimes he has to take a taxi home because he can't remember the way to his house.

    Peter watches a lot of films and reads a lot of books about animals. Each bird knows which way is south. Bats (蝙蝠) can fly at night and find their way with their ears. He feels embarrassed (困窘的) because all these animals have a good sense of direction. He tries to find his way with the help of stars in the sky. There is a star called the North Star, and he knows how to find it.     Of course, Peter's friends are still laughing at him, because he can only see the North Star outside when it is sunny at night. He can't tell the directions in the daytime or when he is inside or when it is cloudy.

光明数学参加课外活动小组的人数统计如图所示，则该校参加课外活动小组的共有

____人。

保护生物的多样性，就等于保护人类自身。

2014年2月8日至23日，第22届冬季奧林匹克运动会在俄罗斯______举行。（   ）