As he applied sunscreen to his young daughter’s face, DaraO’Rourke, professor

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问题 As he applied sunscreen to his young daughter’s face, Dara
O’Rourke, professor of environmental and labour policy at the
University of California. Berkeley. found him wondering if the lotion【S1】________
was safe. He realized there was no ready available answer. The result一【S2】________
two years, a team of chemists, lots of testing and a chunk of venture
capital later——is GoodGuide. com. Launched in 2008, this is a website
and smart phone app that rates 140, 000 consumer products(currently
only in America)according to their safety, environmental sustainability
and the ethics of the firms that make them. Now GoodGuide has created
a new “purchase analyser” app designed to inform consumers not just
about the values embedding in product, but also about whether they are【S3】________
the virtuous shoppers they say they want to be. Using the new app
requires selecting a series of characteristics, that can range from whether【S4】________
the user favours organic products to buy only from firms with a good【S5】________
human right record. The consumers then scan the barcode on【S6】________
product with the camera in their smart phone. The app identifies it and【S7】________
checks in a database to score how it shapes in. 【S8】________
Much however depends on the quality of the data, which【S9】________
GoodGuide gathers from various sources, including government reports
and scientific studies, and research by its own staff. If the product
scores badly, the app will recommend an alternative item which is rated
more highly. The app also tracks a consumer’s purchases to see how
well they fit in with their selected values, giving a sort of personal virtue【S10】________
(or hypocrisy)rating. [br] 【S7】

选项

答案 ∧product—a

解析冠词缺失。该句意为“然后消费者用智能手机上的照相机扫一扫产品的条形码。”此处product是泛指可数名词单数，因此前面需加不定冠词a。

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As he applied sunscreen to his young daughter’s face, DaraO’Rourke, professor

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