1.A 细节理解题。根据第一段第三句“Clinical death occurs when the vital organs,such as the heart or lungs,have ceased to function,but have not suffered permanent damage.”可知,临床死亡的人的重要器官停止运转,但不会遭受永久损伤, 仍然有可能会复活。故选A项。
2.C 细节理解题。根据第二段第一句“Scientists have been seeking a way to lengthen the period of clinical death so that the organism can remain alive before biological death occurs.”可知,科学家在设法延长临床死亡的时间以便推迟生物死亡的到来。故选C项。
3.D 细节理解题。根据第三段第二、三、四句“The scientists put Keta to sleep with a narcotic.Then they surrounded her body with ice-bags and began checking her body temperature.When it had dropped to 28 degrees the scientists began draining blood from an artery.”可知,科学家通过让Keta睡眠、降低体温以及抽光动脉的血液来使她进入临床死亡。故选D项。
4.C 细节理解题。根据第三段中的“At this point...and lifted her head.”及文章的最后一句可知,这只猴子自主呼吸、心脏跳动、睁眼、抬头,几乎恢复到之前的生理状态,此外它的一举一动与一只健康的猴子几乎无异。根据文章倒数第二句可知,这只猴子拒绝注射盘尼西林。故选C项。
B
Nature is full of color,from rainbows and roses to butterfly wings and peacock tails.Even the fruits and vegetables you eat have different colors:blue blueberries,red strawberries,green broccoli,and orange carrots.
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