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Modern plant breading is largely based on planned hybridization combined with_____selection to speed up the evolution of new var
Modern plant breading is largely based on planned hybridization combined with_____selection to speed up the evolution of new var
admin
2012-06-18
97
问题
Modern plant breading is largely based on planned hybridization combined with_____selection to speed up the evolution of new varieties.
选项
A、stringent
B、stern
C、emergent
D、austere
答案
A
解析
分析本题中的四个选项可知,stringent,stern,austere三者都有严厉的意思。它们的区别是:stringent指“措施、操作等是严格的”;stern指“严厉的。一般用来指人”;Austere指的是“环境严峻,或地方简朴无多余装饰,用来指人指庄重的”。emergent意为“紧急的,浮现的,突然出现的,自然发生的”。四个选项中,只有A项符合题意。因此本题答案为A。
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