二维码在中国的流行程度不容忽视。这些黑白相间的方形符号在微信或支付宝中被广泛使用，用户通过扫描二维码来添加新朋友或进行支付。
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.
The QR Code system originated in Japan. The engineer Masahiro Hara felt the limitation of the one-dimension bar code in use and thus developed the QR codes which could carry data horizontally and vertically. QR codes could hold much more information than bar codes due to their extra dimension. In addition, QR codes have larger data capacity, smaller print-out size and higher resistance to damage.
Though the technology of QR codes is complicated, we can easily create our own QR codes with the help of QR code generators, many of which are available online for free. Users could enter the data they wish the QR code to display, and the generator turns it into a symbol that can be printed or displayed in electronic form. The process of creating QR codes could be really fun when we customize the design of the codes according to our specific needs. For instance, we can adjust the color, add a logo, and create social options, etc. Moreover, dynamic QR codes are also available. They are more various than standard QR codes because they allow users to edit data entered previously, whereas data in standard QR codes cannot be edited once printed. Besides, don't limit your QR code to one mobile scanner. Anyone can scan your code with any reader. A lower barrier to entry makes success more likely for you and the user.
Meanwhile, we must also recognize the vulnerability of QR codes. Due to their easy access, criminals can steal simply by replacing the QR codes with their own, transfering cash to their own bank accounts. Hence, we should all become more conscious of virtual money transactions through QR codes and take additional security measures.
A.Data storage.
B.Scanning a reader.
C.Social networking.
D.Mobile payment.
【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.
【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.
【参考答案】B
[考点]词语理解题
【精析】B 根据最后一段第一、二句“Meanwhile, we must also recognize the vulnerability of QR codes…criminals can steal simply by replacing the QR codes with their own, transfering cash to their own bank accounts.”可知，作者提醒人们必须认识到二维码的脆弱性;由于其容易进入，罪犯只需将二维码换成自己的二维码，就可以进行盗窃，将资金转入自己的银行账户。由此可推知，vulnerability意为“脆弱性”，在此处“二维码的脆弱性”主要是指它的缺点。threat：威胁，恐吓;weakness：(系统、性格等的)缺点，不足;difficulty：困难，难事;simplicity：简单(性)，容易(性)。故选B。
A.By adding a special logo.
B.By changing the color.
C.By creating various social options.
D.All of the above.
【参考答案】D
[考点]事实细节题
【精析】D 根据第三段第三、四句“…when we customize the design of the codes according to our specific needs. For instance, we can adjust the color, add a logo, and create social options, etc.”可知，我们可以根据自己的具体需求个性化设置二维码的设计，例如，我们可以调整颜色、添加标志、创建社交选项等。因此A、B、C三项均是个性化设置个人二维码的方式。故选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.
【参考答案】D
[考点]推理判断题
【精析】D根据第二段第一句“The QR Code system originated in Japan.”可知，二维码首先在日本开始使用，所以A项不正确;根据第三段第一句“…QR code generators, many of which are available online for free.”可知，许多二维码生成器都可以在网上免费获得，所以B项不正确;根据第三段倒数第四句“…data in standard QR codes cannot be edited once printed.”可知，标准二维码一旦打印，其中的数据就无法被编辑，所以C项不正确。根据第三段最后两句“Anyone can scan your code with any reader. A lower barrier to entry makes success more likely for you and the user.”可知，任何人都可以用任何电子识读机扫描你的代码;进入门槛越低，你和用户就越有可能成功。由此可推知，有更多的扫描设备可以读取二维码，所以D项正确。故选D。
尽管二维码技术复杂，但用户可以轻松地使用在线生成器创建自己的二维码。二维码的易用性和多功能性使其在现代社会中越来越受欢迎。然而，用户也应意识到二维码的脆弱性，采取必要的安全措施以防止潜在的欺诈行为。
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