61. Columbus’ decision to sail west to reach the East _____ on his belief that the earth was round.

A. existed

B. sat

C. relaxed

D. rested

62. Despite the wonderful acting and well-developed plot the _____ movie could not hold our attention.

A. three-hours

B. three-hour

C. three-hours’

D. three-hour’s

63. Difficulties can _____ a person’s best qualities.

A. bring up

B. bring out

C. bring about

D. bring to

64. Doctors sometimes _____ old cures when modern medicine doesn’t work.

A. fall on

B. fall down on

C. fall back on

D. fall in upon

65. Does brain power _____ as we get older? Scientists now have some surprising answers.

A. descend

B. decline

C. deduce

D. collapse

66. Doing your homework is a sure way to improve your test scores, and this is especially true _____ it comes to classroom tests.

A. when

B. since

C. before

D. after

67. Don’t worry. The company will _____ all your expense.

A. satisfy

B. meet

C. pay

D. submit

68. Eventually, people spread throughout the continent, ______ the entire species.

A. wiping out

B. wiping away

C. wiping off

D. wiping up

69. Experts say walking is one of the best ways for a person to ______ healthy.

A. preserve

B. stay

C. maintain

D. reserve

70. Faced with the ______ difficulties, they are determined to carry on their program.

A. satisfactory

B. attributable

C. innocent

D. intangible