【单选题】地球有史以来,有三次重要的大冰期,下列选项中属于这三大冰期的是()
【简答题】______ people always look on the bright side of life.
【单选题】__________ the stars are, the smaller they look, as is known to all the people.
C.
No matter how far away
【单选题】地球有史以来,有三次重要的大冰期,下列选项正确的是
C.
石炭-二叠纪大冰期,第四纪大冰期,震旦纪大冰期
【单选题】People always look for excuses to ________ doing something.