The passage mainly describes Darwin's ______

(67)

(65)

(66)

What are the reasons for the success of eugenics in the U.S.?

(64)

Millions of years later, the earth has stopped rotating on its axis.[ (63)The machine. lands on. a desolate beach where. she Time Traveler discovers the only inhabitants. are giant, evil-looking crabs.] He sets the machine in motion again, and now, thirty million years after leaving the safety of his laboratory, (64)he finds the world . cold, still hulk. faintly ]it by a dying sun.

[(65)Horrified the. Time Traveler sets the machine back. for the return journey, ]and eventually reaches home where he tells his story to his friends. [(66)Disillusioned though he is with she future, the Time Traveler has st off again on a journey through time,]Three years later he has still not returned, and[ (67)his friends can only speculate about what misadventure has overtaken him in the depths of time.]

(From The Time Machine)

 （63）

(59)

(60)

What are the influences of eugenics in the U.S. in the 1920s?

(57)