小站备考
托福
托福阅读
mock test 12阅读

托福mock test 12阅读 Vanishing Honeybees 题目解析

展开
Vanishing Honeybees
Tip:单击查看句义;划选/双击查生词
Honeybees are crucial pollinators that contribute to the growth of many crops worldwide. Recently, a phenomenon known as Colony Collapse Disorder (CCD) has led to alarming declines in honeybee populations. CCD is characterized by the sudden disappearance of worker bees from a hive, leaving behind the queen and immature bees.

Researchers have been investigating various potential causes of CCD, including pesticides, parasites, and habitat loss.Among these, neonicotinoids, a class of pesticides, have been heavily scrutinized. Studies show that these chemicals can disorient bees, making it difficult for them to return to their hives. Another suspect is the varroa mite, a parasitic pest that weakens bees by feeding on their bodily fluids and spreading viruses. Habitat loss compounds the problem by reducing the availability of nectar and pollen sources, which are essential for bee nutrition.

Efforts to mitigate CCD involve promoting organic farming practices, creating bee-friendly habitats, and conducting further research to identify and address all contributing factors.Some may still be unknown, but researchers are expanding their efforts by investigating even such things as inadequate hive management by beekeepers.Without understanding and addressing CCD, honeybee populations could continue to decline, posing a threat to global food security.

1.Which of the following is NOT mentioned as a contributing factor to CCD?

你的答案:
正确答案:C

名师1对1,深度分析薄弱项,高效提分

去咨询
题目解析:
 后才能查看题目解析,还没有账号? 马上注册
"1. 题干:以下哪一项未被提及为蜂群崩溃失调(CCD)的促成因素?(原文:Which of the following is NOT mentioned as a contributing factor to CCD?) 2. 分析 题目类型:否定事实题 解题策略:需定位原文中关于 “CCD 促成因素” 的描述,逐一匹配选项,排除被提及的内容,剩余即为答案。 3. 定位信息理解 原文中提及的 CCD 促成因素: 农药(neonicotinoid pesticides); 寄生虫(varroa mites); 栖息地丧失(habitat loss); 而 “immature bees(幼蜂)” 是 CCD 发生后的结果(蜂巢中留下蜂后和幼蜂),并非促成因素。 4. 分析选项 (A) Neonicotinoid pesticides(新烟碱类农药) 分析:原文明确提及,排除。 (B) Varroa mites(瓦螨) 分析:原文明确提及,排除。 (C) Immature bees(幼蜂) 分析:幼蜂是 CCD 的结果而非促成因素,此为正确答案。 (D) Habitat loss(栖息地丧失) 分析:原文明确提及,排除。"

学习页面

Medi

terr

anean

加强 + 政府 + 名词后缀

加强的政府——管理

原文例句

加入生词

本文生词 0

色块区域是你收藏过的生词;

查询次数越多,颜色越深哦~

显示文中生词

登录后才能收藏生词哦,现在登录注册>

本文重点词 45

文中加粗单词为本文重点词;

根据词频与核心词范围精心挑选,托福考试必掌握词汇。

显示文中重点词
学习本文词汇

文中划选/双击的生词、加粗重点词已收纳至词盒

可随时点击词盒查看哦~

只有在词句精学模式下才能开启词盒功能哦~

我知道了

词盒
收藏
笔记
我的笔记
5000
保存
反馈