2010年6月英语六级考试模拟练习题答案(4)
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C. vitamins
D. diet
5. Vitamins are called “micronutrients” in that _________.
A. excessive fat soluble vitamins can be excreted in the urine
B. the body only requires small amount of vitamins
C. a dose of 3300mg of vitamins can be considered toxic
D. the high concentrations of water soluble vitamins are toxic
6. Night blindness is a disease normally caused by lack of __________.
A. fat soluble vitamins
B. water soluble vitamins
C. vitamin A
D. innate disability
7. The main function of vitamin D is to prevent adults from ________.
A. the growth of strong bones
B. fracture
C. a progressive softening of the bones
D. calcium uptake from the gut
8. Although the human body produces vitamin D normally, it fails to do so if there is not enough ______________.
9. The reason why vitamin C is seen as an antioxidant is that it drives __________ out of the body.
10. If you are in lack of B group vitamins, you should turn to _______________.
Part Ⅳ Reading Comprehension (Reading in Depth) (25 minutes)
Section A
Directions：In this section，there is a short passage with 5 questions or incomplete statements. Read the passage carefully. Then answer the questions or complete the statements in the fewest possible words on Answer Sheet 2.
Questions 47 to 51 are based on the following passage.
For most people, shopping is still a matter of wandering down the high street or loading a cart in a shopping mall. Soon, that will change. Electronic commerce is growing fast and will soon bring people more choices. There will, however, be a cost: protecting the consumer from fraud will be harder. Many governments therefore want to extend highstreet regulations to the electronic world. But politicians would be wiser to see cyberspace as a basis for a new era of corporate self-regulation.
Consumers in rich countries have grown used to the idea that the government takes responsibility for everything from the stability of the banks to the safety of the drugs, or their rights to refund(退款) when goods are faulty. But governments cannot enforce national laws on businesses whose only presence in their country is on the screen. Other countries have regulators, but the rules of consumer protection differ, as does enforcement. Even where a clear right to compensation exists, the online catalogue customer in Tokyo, say, can hardly go to New York to extract a refund for a dud purchase. |
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