1.【完成句子】Sagan was noted for the vigour of his logic style,especially when criticizing some piece of pseudoscience（伪科学）.I remembered a 1973 AAAS meeting at which he destroyed the theories of Immanuel Velikovsky,who was maintaining that only a few thousands of years ago,Venus had repeatedly collided with Earth and Mars;events well noted. Velikovsky said,in the bible.
In Sagan‘s opinion,Velikovsky might be__________.
A.a member of the National Academy of Science
C.a science populariser
1.【完成句子】Did you know that before 1950,hurricanes had no names?They were simply given numbers. The first names were simply Alpha,Bravo,Charlie,etc. but in 1953,females names were given because of the unpredictability（不可预知）factor of the storms. In 1979,realizing the sexist（性别歧视的）nature of such names,the lists were expanded to include both men and women.
The main consideration of using males and females‘ names for hurricanes is __________.
D.its connection with humans