1. Some people believe that since oil is scarce， the ________ of the motor industry is uncertain.
A) terminal B) benefit C) fate D) estimate
2. To speed up the ________ of letters， the Post Office introduced automatic sorting.
A) treatment B) delivery C) transmission D) departure
3. These overseas students show great ________ for learning a new language.
A) enthusiasm B) authority C) convention D) faith
4. The defense lawyer was questioning the old man who was one of the ________ of the murder committed last month.
A) observers B) witnesses C) audiences D) viewers
5. Politically these nations tend to be ________， with very high birth rates but poor education and very low levels of literacy.
A) unstable B) reluctant C) rational D) unsteady
答案：CBABA
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