阅读理解
Mr. Faugel was convinced that student nervousness had affected their scores; to reduce the anxiety of these students who had already been tested, he gave 22 of them a beta blocker before readministration of the test. Their scores improved significantly. The other 8 students (who did not receive the beta blockers) improved only slightly. Second-time test-takers nationwide had average improvements which were similar to those in Faugel''s non-beta blocker group. Beta blockers are prescription drugs which have been around for 25 years. These medications, which interfere with the effects of adrenalin, have been used for heart conditions and for minor stress such as stage fright. Now they are used for test anxiety. These drugs seem to help test-takers who have low scores because of test fright, but not those who do not know the material. Since there can be side effects from these beta blockers, physicians are not ready to prescribe them routinely for all test-takers.
单选题
Where is the only place a person can obtain beta blockers?
【正确答案】
D
【答案解析】细节题型。见文中Beta blockers are prescription drugs which have been around for 25 years.β-受体阻滞药是一种已存在25年左右的处方类药。既是处方药，当然要从医生处获得了。
单选题
Why are beta blockers not prescribed regularly?
【正确答案】
B
【答案解析】细节题型。见文中最后一句：Since there can be side effects from these beta blockers，physicians are not ready to prescribe them routinely for all test-takers．由于β-受体阻滞药可能存在副作用，所以医生们并不愿意给所有的考试者当常规药来开。由此得知是由于此药的副作用，医生们并不经常开；所以B是答案。
单选题
According to the passage,________.
【正确答案】
D
【答案解析】推断题型。根据对以上几题的解析，可排除选项A和B。又根据文中These drugs seem to help test-takers who have low scores because of test fright，but not those who do not know the material．(此类药似乎有助于那些由于怯场而导致分数低的考试者，却不能帮助那些不了解考试内容的人。)可推断出D是正确答案。
单选题
Re-administration in this passage refers to giving________.
【正确答案】
B
【答案解析】词义题型。见文中：…to reduce the anxiety of these students who had already been tested，he gave 22 of them a beta blocker before readministration of the test．为减轻这些已参加过测试的学生的焦虑，他给其中22人服用了β-受体阻滞药，然后又给他们做了次测试。因此选项B．“一组人(22人)服用β-受体阻滞药后再给两组做了次测试”是正确答案。
单选题
What possible use for beta blockers was NOT discussed in this passage?
【正确答案】
B
【答案解析】是非题型，可用排除法。由文中These medications，which interfere with the effects of adrenalin，have been used for heart conditions and for minor stress such as stage fright．Now they are used for test anxiety．两句可知A、C、D选项均有提及，所以答案为B。
单选题
Beta blockers work on some physical and emotional symptoms because they________.
【正确答案】
B
【答案解析】细节题型。见文中：These medications，which interfere with the effects of adrenalin…．这些用来舒缓心境和较小压力如怯场的药物会干扰肾上腺素……，可知B为答案。
单选题
Faugel's research showed that beta blockers given to his sample________.