近年来沙尘暴、强暴雨、强对流、高温、干旱、强台风等极端天气频发！据专家称上述极端天气多是由人们破坏动植物的生存空间等不合理生产活动造成的。这说明（    ） 

给下面文段的横线处填上词语，最恰当的一项是  （     ）
天才与常人        在智力上有区别，在非智力方面        有区别。通常情况下，在非智力方面，天才往往表现出一种强烈的使命感，也许他自己也说不清这使命感究竟是什么，        始终存在着，         通过其言行体现出来，这种使命感就是他对自己生命的责任心。

阅读下列短文, 从下面每小题的A、B、C、D四个选项中选出最佳选项。

There are some great women scientists in the world. The world would certainly not be so wonderful without their hard work.

Here is a list of some top women scientists and their achievements.

◆Marie Curie

      Curie was born in Poland on November 7, 1867. She was a pioneer in the field of radioactivity(放射). She was also the first person to win two Nobel Prizes, one in physics and the other in chemistry.

◆Rosalind Elsie Franklin

     Franklin was born on July 25, 1920 in London. She graduated from Cambridge University. She played a great role (角色) in the discovery of the structure(结构)of DNA.

◆Annie Jump Cannon

      Cannon was born on December 11, 1863. She was an American astronomer. She divided more than 500,000 stars into different kinds and discovered more than 300 stars in her life.

◆Sally Kristen Ride    

      Ride was born on May 26, 1951. She was an American astronaut. She was the first American woman to travel into outer space.

◆Grace Murray Hopper

      Hopper was born on December 9, 1906 in New York. She was one of the earliest computer programmers and a leader in the development of computer software.