摸底:Unit 8(二)
54. The elderly Russians find it hard to live on their state ______.
A) pensions
B) earnings
C) salaries
D) donations
注:pensions 养老金
55. There is supposed to be a safety ______ which makes it impossible for trains to collide.
A) appliance
B) accessory
C) machine
D) mechanism
56. After four years in the same job his enthusiasm finally ______.
A) deteriorated
B) dispersed
C) dissipated
D) drained
注:1. drain (强调结果)耗尽
2. disperse (强调过程)
3. dissipate (强调过程)
57. No one can function properly if they are _______ of adequate sleep.
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