4
(diverse) in the group to overcome illnesses, which means having animals with their genes
5
(arrange) in different ways. The advantage is
6
if there is a new illness some of these animals may die, but others will survive. A suitable habitat would
7
(need) for the extinct animals to lead a natural life, so it would be
8
(fair) to clone any of them if they were to live in a zoo.
9
(base) on the reasons above, we are a long way from being able to clone extinct animals, so the chance of dinosaurs ever returning to the earth is
10
(mere) a dream.
【答案】
1.unfortunately
2.or
3.What
4.diversity
5.arranged
6.that
7.be needed
8.unfair
9.Based
0.merely
4.diversity
句意:你需要完美的DNA和足够的差异来克服疾病。enough在这里是形容词,修饰名词,故填diversity。
5.arranged
with的独立主格结构,genes和arrange之间是被动关系,用过去分词,故填arranged。
6.that
此处是that引导的表语从句,不做成分,只起引导作用,故填that。
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