阅读理解: It is impossible to ignore the popularity of Quick Response(QR) codes in China. These are square-shaped black-and-white symbols in WeChat or Alipay where QR codes are scanned to add new friends or make payment. vulnerability 问题: A. Data storage. B. Scanning a reader. C. Social networking. D. Mobile payment. 滑动查看答案 ☟ ☟ ☟ 【参考答案】B [考点]事实细节题 【精析】B 根据第一段第二句“…QR codes are scanned to add new friends or make payment.”和第二段最后一句“…QR codes have larger data capacity…”可知,通过扫描二维码可以添加新朋友或进行支付,而二维码本身可以储存大量数据,所以A项(数据存储)、C项(网络社交)和D项(移动支付)均是二维码的功能;B项(扫描电子识读机)在文中并未提及。故选B。 A. To introduce the main topic. B .To show the author's attitude. C .To highlight the features of QR codes. D. To add some background knowledge. 滑动查看答案 ☟ ☟ ☟ 【参考答案】C [考点]推理判断题 【精析】C 根据第二段内容可知,日本工程师Masahiro Hara意识到一维条码在使用中的局限性,因此开发出了可以横向和纵向携带数据的二维码;由于二维码的额外维度,它能储存的信息比条形码多得多;它还具有更大的数据容量、更小的打印尺寸和更高的抗损坏性。由此可推知,作者在第二段中提及条形码是为了通过与其对比,突出二维码的特点。故选C。 A. Threat. B .Weakness. C. Difficulty. D .Simplicity. 滑动查看答案 ☟ ☟ ☟ 【参考答案】B [考点]词语理解题 【精析】B A. By adding a special logo. B. By changing the color. C. By creating various social options. D. All of the above. 滑动查看答案 ☟ ☟ ☟ 【参考答案】D [考点]事实细节题 【精析】D A .They were first used in China. B. The generators charge the users a lot. C. Data editing is possible in printed QR codes. D. More scanning devices are available in reading QR codes. 滑动查看答案 ☟ ☟ ☟ 【参考答案】D [考点]推理判断题 【精析】D 点击进入小程序,立即选购线上网课与图书 由于公众号改变了推送规则,想及时收到文章推送,请关注下方公众号