参考答案:
Speed Reading
1.B
2. A
3. D
4. A
5. B
6. C
7. C
8. (sunlight)
9. (toxins)
10. (liver, yeast and dairy products)
Passage one 47 They have more choices.
48 the government
49 Because it is a valuable competitive asset.
50 Switzerland
51 Electronic shoppers
Passage Two DDCCB
Passage Three ACBCD