73、These animals are all used to their environment; ______, they have learned how to live successfully in their habitat.

A. for example　　　　　　　 B. what’s more　　　　　　　 C. that is　　　　　　　 D. or rather

72、Water is actually quite simple, but the way ______ the water molecule is formed gives water its unique properties.

A. how　　　　　　　　　 B. where　　　　　　　　　　　 C. that　　　　　　　　　 D. when

71、Some plants are very ______ to light; they prefer the shade.

A. sensible　　　　　　　　　　 B. sensitive　　　　　　　　　 C. suitable　　　　　　　　　　 D. acceptable

70、For more than 20 years, we’ve been supporting educational programs that ______ from kindergartens to colleges.

A. spread　　　　　　　　　　　 B. move　　　　　　　　　　　 C. shift　　　　　　　　　　　　 D. range

69、It was already one in the morning 　　　　I saw the dull yellow eye of the creature open.

A. when　　　　　　　　　　　 B. that　　　　　　　　　　　 C. which　　　　　　　　　　　 D. since

68、Studies show that the presence of social support helps people defend themselves　　　

illness.

A. against　　　　　　　　　　　　　　 B. over　　　　　　　　　　　　　　 C. with　　　　　 D. off

67、I only know it is a 　　　　distance away from here, but I don’t know 　　　　the distance exactly is.

A. good; what　　　　　　　 B. good; how far　　　　　 C. far; what　　　　　 D. far; how far

66、There comes a time in every man's life_____.　

A. that he needs to think 　　　 　B. when he has to think

　C. therefore he has to work hard 　 D. then he will need it

65、This method, _______in areas near Shanghai, _______in a marked rise in total production.　

A. trying; resulting　　 B. tried; resulted　　 C. trying; resulted　　 D. tried; resulting　

64、Here you are, Tommy. You ______ to take it. I was going to send it to you.

A. don't need to come　　　　　　　　　　　　　　 B. didn't need to come

C. needn't have come　　　　　　　　　　　　　　　 D. needn't come