在湖北专升本考试中，英语科目往往是许多考生的难点，尤其是阅读理解部分。阅读理解不仅考查考生的词汇量和语法知识，还考查其对文章主旨、细节信息以及作者态度的理解能力。

Passage 1

An alcohol breath test is often used by the police to find out whether a person is drunk whiledriving. In the United States, the legal blood alcohol limit is 0.08% for people aged 21 years orolder, while people under 21 are not allowed to drive a car with any level of alcohol in their body.A "positive" test result, a result over the legal limit, allows the police to arrest the driver. However,many people who tested positive on the test have claimed that they only drank a "non-alcoholic"energy drink. Can one of these energy drinks really cause someone to test positive on an ABT?Researchers in Missouri set up an experiment to find out.

First, the amount of alcohol in 27 different popular energy drinks was measured. All but onehad an alcohol level greater than 0.005%. In nine of the 27 drinks, the alcohol level was at least0.096%. The scientists then investigated the possibility that these small levels of alcohol could bediscovered by an ABT. They asked test subjects to drink a full can or bottle of an energy drink andthen gave each subject an ABT one minute and 15 minutes after the drink was finished.

For 11 of the 27 energy drinks, the ABT did find the presence of alcohol if the test was givenwithin one minute after the drink was taken. However, alcohol could not be discovered for any ofthe drinks if the test was given 15 minutes after the drink was consumed. This shows that whenthe test is taken plays an important role in the test result. The sooner the test is conducted after theconsumption of these drinks, the more likely a positive alcohol reading will be obtained.

17. In the United States, people under 21 are not allowed to drive a car with_________level of alcohol in their body.

18. If a driver's test result is_________，the police are allowed to arrest him or her.

19. To find out whether one of these energy drinks really cause someone to test positive on anABT, researchers in Missouri measured_________different popular energy drinks.

20. The ABT found that alcohol was_________in 11 of the 27 energy drinks if thetest was given within one minute after the drink was taken.

21. The sooner the test is conducted after the consumption of these drinks, the more likely a positive_________reading will be obtained.

参考答案：

17.any   18.positive   19.27    20. present    21.alcohol

欢迎关注【普本课堂专升本】公众号获取专升本最新资讯。