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　　27. The word engine in the passage is closest in meaning to

　　(A) desire

　　(B) origin

　　(C) science

　　(D) chemical

　　28. The word it in the passage refers to

　　(A) secretin

　　(B) small intestine

　　(C) bloodstream

　　(D) pancreas

　　29. The word spurred in the passage is closest in meaning to

　　(A) remembered

　　(B) surprised

　　(C) invented

　　(D) motivated

　　30. To be considered a hormone, a chemical produced in the body must

　　(A) be part of the digestive process

　　(B) influence the operations of the nervous system

　　(C) affect processes in a different part of the body

　　(D) regulate attitudes and behavior

　　31. The glands and organs mentioned in paragraph 3 are categorized according to

　　(A) whether scientists understand their function

　　(B) how frequently they release hormones into the body

　　(C) whether the hormones they secrete influence the aging process

　　(D) whether they secrete chemicals into the blood

　　Paragraph 3 is marked with an arrow [→]

　　32. The word key in the passage is closest in meaning to

　　(A) misunderstood

　　(B) precise

　　(C) significant

　　(D) simple

　　33. The word minute in the passage is closest in meaning to

　　(A) sudden

　　(B) small

　　(C) changing

　　(D) noticeable

　　34. Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect answer choices change the meaning in important ways or leave out essential information.

　　(A) Most moods and actions are not voluntary because they are actually produced by the production of hormones in the body.

　　(B) Because the effects of hormones are difficult to measure, scientists remain unsure how far-reaching their effects on moods and actions are.

　　(C) When the body is not producing enough hormones, urgent treatment may be necessary to avoid psychological damage.

　　(D) The influence of many hormones is not easy to measure, but they can affect both people's psychology and actions extensively.

　　35. The word tempered in the passage is closest in meaning to

　　(A) decreased

　　(B) advertised

　　(C) prescribed

　　(D) researched

　　36. Which patients are usually treated with growth hormone?

　　(A) Adults of smaller statue than normal

　　(B) Adults with strong digestive systems

　　(C) Children who are not at risk from the treatment

　　(D) Children who may remain abnormally small

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