解析 目的意图题。通过文章第一段第一句话Using animals to test drugs intended for humans is controversial, ffective.可知文章开门见山提出本文的论点即:能否在动物身上进行新药尝试因此本题答案为C。
答案 C
(Paragraph 2) is closest in meaning to ________.
C.experimental subject
D.scientific pioneer
解析 词义猜测题。第二段阐述尽管在外表上老鼠和人类大不相同但是他们的基因图谱非常相近因此老鼠是可以被用做实验对象的。由此可知划线词含义为:实验对象或研究目标。
答案 C
________.
B.scientists have no other alternatives to replace mice
C.mice are very easy and cheap to obtain
D.no people want to go through the suffering
解析 细节理解题。根据第二段The mouse genome shares over 95% of its genes with humans.可知在老鼠身上进行新药尝试的原因在于老鼠与人类的图谱类似因此本题答案为A。
答案 A
________.
B.Ms.Dawes thinks it is cruel to do experiments on animals
C.computerized modes can completely replace animal experiments at the present stage
D.Dr.Wells is not in favor of other alternatives in drug tests in the future
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