What is the mystery that researchers find hard to explain? Researchers are seriously concerned with the phenomenon of colony-co

admin2009-05-21 69

问题 What is the mystery that researchers find hard to explain?
Researchers are seriously concerned with the phenomenon of colony-collapse disorder because

选项 A、honeybees help produce one-third of the foods we eat.
B、parasites on bees may spread everywhere.
C、honeybees cannot find enough food elsewhere.
D、honeybees feed on flowers.

答案A

解析文章的第二段的第一句话给出了答案。研究者之所以密切关注这一现象是因为我们三分之一的食物的生产离不开蜜蜂传播花粉。

转载请注明原文地址:https://www.kaotiyun.com/show/2VQd777K

本试题收录于：职称英语理工类B级题库职称英语分类

职称英语理工类B级

职称英语

相关试题推荐

Itisreportedthatonlyapartofpeopleexperienceintheirlife.Paraplegicsandtetrap1egicsarepeoplewhomosteasilyexp
Painissomethingthateveryoneexperiencesatsometime,toagreateroflesserdegree(在或大或小的程度)Chronicorlong-termpain,how
HappyMarriage,HappyHeartHappilymarriedpeoplehavelowerbloodpressure【51】______unhappilymarriedpeopleorsingles,
Intherecentpast,medicalresearchershaveshownthatheartdiseaseisassociatedwithcertainfactorsinourday-to-daylives
TwoscientistswhohavewonpraiseforresearchintothegrowthofcancercellscouldbecandidatesfortheNobelPrizeinmedic
Foreignmoneycanbeconvertedintothelocalcurrencyatthisbank.
FoodSafetyandFoodborneIllnessesFoodsafetyisanincreasinglyimportantpublichealthissue.Governmentsalloverthew
AimaginativelyBrecentlyCcarefullyDunscientificallyEaccidentallyFsatisfactorilyMandidnotsucceedinmakingrainun
YouNeedCourage!ShortlyafterIbeganacareerinbusiness,IlearnedthatCarlWeatherup,presidentofPepsiCo(百事可乐公司

随机试题

但看同学家的崇奉国粹，文学家的赞叹固有文明……
患者女，16岁。双下肢反复出现瘀点、瘀斑2年，脾刚可触及。Hb90g／L，WBC6×109／L，PLC40×109／L；出血时间5min，凝血时间正常。最可能的诊断为
某患者男性，73岁。因纳差、消瘦3个月，嗜睡2天入院。查体：体型极度消瘦，呈恶病质，嗜睡，呼之可应。双眼不突出，巩膜轻度黄染，甲状腺I度肿大，心率100次／min。下列处理措施哪项是错误的
女性，48岁患糖尿病10年，尿蛋白阴性，近1个月感下腹部胀，排尿不畅伴尿失禁。B超显示：“膀胱扩大，尿潴留”。其原因应考虑
开放式基金是根据()划分的证券投资基金的种类。
建筑施工企业取得安全生产许可证，应当具备的安全生产条件有()。
结合实际，谈谈你对素质教育内涵和实质和理解。
科学家们表示，年幼的狨猴(如上图)会学着在别的狨猴呼喊结束后再发声，这一发现或可帮助我们___________。除了人类以外的灵长类动物都学不会发声，没有模仿所听到的声音的能力——这种能力对于说话来说必不可少。但是狨猴研究者表示，灵长类动物仍然在以近乎交谈
She______afortunewhenherfatherdied.
Surprisingly,nooneknowshowmanychildrenreceiveeducationinEnglishhospitals,stilllessthecontentorqualityofthate

最新回复(0)

What is the mystery that researchers find hard to explain? Researchers are seriously concerned with the phenomenon of colony-co

职称英语理工类B级

职称英语

Itisreportedthatonlyapartofpeopleexperienceintheirlife.Paraplegicsandtetrap1egicsarepeoplewhomosteasilyexp

Painissomethingthateveryoneexperiencesatsometime,toagreateroflesserdegree(在或大或小的程度)Chronicorlong-termpain,how

HappyMarriage,HappyHeartHappilymarriedpeoplehavelowerbloodpressure【51】______unhappilymarriedpeopleorsingles,

Intherecentpast,medicalresearchershaveshownthatheartdiseaseisassociatedwithcertainfactorsinourday-to-daylives

TwoscientistswhohavewonpraiseforresearchintothegrowthofcancercellscouldbecandidatesfortheNobelPrizeinmedic

Foreignmoneycanbeconvertedintothelocalcurrencyatthisbank.

FoodSafetyandFoodborneIllnessesFoodsafetyisanincreasinglyimportantpublichealthissue.Governmentsalloverthew

AimaginativelyBrecentlyCcarefullyDunscientificallyEaccidentallyFsatisfactorilyMandidnotsucceedinmakingrainun

YouNeedCourage!ShortlyafterIbeganacareerinbusiness,IlearnedthatCarlWeatherup,presidentofPepsiCo(百事可乐公司

但看同学家的崇奉国粹，文学家的赞叹固有文明……

患者女，16岁。双下肢反复出现瘀点、瘀斑2年，脾刚可触及。Hb90g／L，WBC6×109／L，PLC40×109／L；出血时间5min，凝血时间正常。最可能的诊断为

某患者男性，73岁。因纳差、消瘦3个月，嗜睡2天入院。查体：体型极度消瘦，呈恶病质，嗜睡，呼之可应。双眼不突出，巩膜轻度黄染，甲状腺I度肿大，心率100次／min。下列处理措施哪项是错误的

女性，48岁患糖尿病10年，尿蛋白阴性，近1个月感下腹部胀，排尿不畅伴尿失禁。B超显示：“膀胱扩大，尿潴留”。其原因应考虑

开放式基金是根据()划分的证券投资基金的种类。

建筑施工企业取得安全生产许可证，应当具备的安全生产条件有()。

结合实际，谈谈你对素质教育内涵和实质和理解。

She______afortunewhenherfatherdied.

Surprisingly,nooneknowshowmanychildrenreceiveeducationinEnglishhospitals,stilllessthecontentorqualityofthate