4.What is the main idea of the passage?
A. All the insects' movements disturb the life of bees.
B. Fewer and fewer honey bees are living in Australia.
C. Australian scientists track bees to stop diseases.
D. Advanced technology is used on honey bees.
答案:
1.C 解析:目的意图题。依据文章第一段的aimed at stopping the spread of diseases...可知,科学家的目的是阻止影响蜜蜂群体的某种疾病的传播。故选C项。
2.B 解析:细节理解题。依据文章第一段可知,科学家研究的目的是找出影响蜜蜂的疾病,第二段的the invasion of other harmful insects表明,由害虫入侵带来的某种疾病,导致蜜蜂突然失踪。故选B项。
3.A 解析:细节判断题。依据文章第一段的...that have wiped out populations in the northern hemisphere可知,某种疾病导致蜜蜂数量下降,因此研究的结果有助于提高蜜蜂的数量。故选A项。
4.C 解析:主旨大意题。文章讲述了澳大利亚科学家用芯片跟踪蜜蜂进行的研究,其目的是找出影响蜜蜂群体的疾病。故选C项。
B
Researchers have discovered a previously undocumented species of all-female lizard (蜥蜴) that can reproduce itself by cloning.
Leiolepis ngovantrii is a small lizard found only in the Mekong River delta in south Vietnam.
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