Question

18．If you want to be a citizen scientist，the National Science Foundation（NSF） has got you covered．NSF supports citizen scientists across all areas of science，whether your passion（热情）is scanning the night sky，exploring your own backyard or playing video games．
Join a Flock of Birders
eBird is an online platform that allows bird-watchers to record their sightings on a massive online database．With more than 100，000 active users，eBird involves bird population，distribution（分布）and habitat that users can explore in real time．In May 2015，there were 9.5 million records uploaded．
Count Every Drop
The Community Collaborative Rain and Snow Network is the largest provider of daily rainfall observations in the United States．Volunteers set up rain instruments and record data every time a rain，or snow storm passes．Data is organized and shared on the CoCoRaHS website，and used by the National Weather Service，scientists，farmers and so on．
Join the Plankton Party
Without plankton（浮游生物），life in the ocean would not exist．These tiny things form the base of the food chain and play an important role in the global carbon cycle．Plankton Party encourages citizen scientists to identify images snapped（拍照）by the ISIIS，an underwater robot．Classifying the images helps researchers understand plankton diversity，habitat and behavior．

21．What can bird-watchers do with eBird？C
A．Watch birds through satellites．
B．Choose their favorite birds．
C．Upload their sightings to a database．
D．Observe the night sky
22．Which subject can you learn about if you join Count Every Drop？D
A．Farming．
B．Biology．
C．Animals．
D．Weather．
23．What's the intention of the Plankton Party？A
A．To help researchers to learn about plankton．
B．To raise citizens'interest in plankton．
C．To inform citizens of how ocean life survives．
D．To tell us what ISIIS does with ocean life．

Answer 1

分析 你想成为一名公民科学家，NSF支持所有科学领域的公民科学家，本文介绍了集中成为公民科学家的国家科学基金会．

解答 21．C  细节理解题．根据句子；eBird is an online platform that allows bird-watchers to record their sightings on a massive online database．eBird是一个在线的平台使观鸟者记录他们的观测在一个巨大的在线数据库．所以C选项上传他们的目击到数据库是正确的．
22．D 细节理解题．根据句子：Volunteers set up rain instruments and record data every time a rain，or snow storm passes．Data is organized and shared on the CoCoRaHS website，and used by the National Weather Service，scientists，farmers and so on．志愿者建立雨仪器记录数据，每一次雨或暴风雪过去．数据是有组织的、可共享的CoCoRaHS网站，并被国家气象服务站，科学家、农民等应用．可见这家可让人学到更过的天气的知识，所以答案选D．
23．A 细节理解题．根据句子：Plankton Party encourages citizen scientists to identify images snapped（拍照）by the ISIIS，an underwater robot．Classifying the images helps researchers understand plankton diversity，habitat and behavior．可见Plankton Party可帮助研究人员了解浮游生物，所以答案选A．

点评 本文考查细节题为主，细节题可以在文章中直接找到与答案有关的信息？或是其变体．搜查信息在阅读中非常重要它包括理解作者在叙述某事时使用的具体事实、数据、图表等细节信息．在一篇短文里大部分篇幅都属于这类围绕主体展开的细节．做这类题一般采用寻读法？即先读题，然后带着问题快速阅读短文，找出与问题有关的词语或句子，再对相关部分进行分析对比，找出答案．