up-regulation of temperature is a preventative measure against chalk brood 说明升温是保护性措施.
honeybees are incapable of purposely raising hive temperatures 蜜蜂不能有意识地升高蜂房温度. .
A. apis cannot be completely eradicated through up-regulation of temperature along 说明仅仅通过升温A不能完全被消除.
honeybee larvae have a mechanism to alert adult honeybees to the presence of A. apis 幼虫有能力向成年蜜蜂报警.
honeybee larvae may benefit from increased hive temperature even when there is no A. apis present 即使没有A,幼虫可能从增高的温度中获益.
27. According to the passage, which of the following is true of chalk brood infection among honeybee larvae?
Larvae in small colonies are more likely to pass the infection to adult honeybees than are larvae in large ones. 相较于大蜂群,小蜂群中的幼虫更容易把感染传给成年蜂.
Infection with chalk brood induces larvae to raise their hives temperature. 感染使得幼虫升高蜂房的温度.
The infection is more likely to affect larvae in winter than in spring. 相比于春天,感染更容易在冬天发生.
Larvae fail to develop symptoms of the disease when their brood comb temperature remains within the normal range. 在蜂群温度正常的时候幼虫身上没有任何感染的病症.
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