=>ANSWER: A
1. Monkeys experienced more chronic disease.
=>ANSWER: B
1. Monkeys have been shown to experience a longer than average life span
In the sixth paragraph, the writer says: “They (refers to caloric-restricted monkeys) and the other monkeys must be followed still longer, however, to know whether low-calorie intake can increase both average and maximum lifespans in monkeys.” It means that we do not yet know whether caloric-restricted monkeys experience a longer than average life span than the control monkeys.
=>ANSWER: C
1. Monkeys enjoyed a reduced chance of heart disease.
=>ANSWER: A
1. Monkeys produced greater quantities of insulin.
=>ANSWER: B
Questions 38-40:
Choose no more than TWO words from the passage to complete the flow-chart: How a caloric- restriction mimetic works
CR mimetic
Less 38……is produced Productions of ATP is decreased
Theory 1: Theory 2:
Cells less damaged by disease because fewer Cel ls focus on 40…..because food is in short supply 39……are emitted
1. In the last paragraph, the writer says that: “.caloric restriction minimizes the amount of glucose entering cells…..” This means that less glucose is produced than normal.
=>ANSWER: glucose
1. According to the last paragraph, there are two “explanations for why interruption of glucose processing and ATP production might retard aging.”
In which, “one possibility relates to the ATP-making machinery‟s emission of free radicals ….Reduced operation of the machinery should limit their production and thereby constrain the damage.”The words “their production” refers to “the ATP- making machinery‟s emission of free radicals”. So, the damage is constrained because of limited emission of free radicals, or fewer free radicals are emitted.
+ emission~production
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