77. Scientists have made a major b__________ (重大突破) in the treatment of cancer.

76.We want to get our rights by p________ (和平的)actions, not by violence.

75.You can see a wide v_____ (种类)of trees here, such as pine trees, lemon trees and so on.

74. I can’t g_______ (保证)that I will be able to help you, but I will try.

73. The rich man had a large house with a garden and he hired three s________ .(仆人)　

72. Science f _____ (小说)films are popular with young people. They can call up their interest in science. .

71. He was a______ (逮捕)when the police found drugs in his bag.

70. Until diamonds are cut and polished, they do not sparkle like those you see on a ring-they just look like small, blue-grey stones.

A．发出火花　　　　　　　　　　 B．折射彩光

C．闪烁光芒　　　　　　　　　　 D．释放活力

第Ⅱ卷

69. Among isolated peoples, who are not often reached by traders from outside, commerce usually means barter.

A．财富　　　　　　　　　　　　 B．通商

C．货物　　　　　　　　　　　　 D．(实物)交易

68. In the words it must be “durable, distinct(独特的), divisible(可分分割的) and portable(轻便的)”.

A．稳定的　　　　　　　　　　　 B．坚固的

C．持久的　　　　　　　　　　　 D．耐用的