Unit 5 First aid reading课时作业

第一节（共15小题；每小题2分，满分30分）

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

Big Messaging Apps Abroad

　　While WeChat is China's biggest mobile messaging app, there are many similar apps in other countries that offer similar features.

　　WhatsApp (US)

　　Users: more than 300 million

　　Platforms: Android, iOS, Windows Phone, BlackBerry

　　Features: Text chat, push-to-talk, file sharing, location sharing

　　With more than 300 million active users, WhatsApp is one of WeChat's biggest competitors.

　　Developed by two ex-Yahoo employees in 2009, WhatsApp originally focused on text chat, but on Aug. 6 it also started push - to - talk service. It's noted for its accessibility, easy use and the absence of advertisements. The service is free for the first year, after which $ 0.99 (6. 06 yuan) is charged for a one -year subscription.

　　Kakao Talk (South Korea)

　　Users: more than 100 million

　　Platform: Android, iOS, windows Phone, BlackBerry and Bada (an operate system developed by Samsung)

　　Features: Text chat, group chat, push-to-talk, group calls, file sharing

　　With more than 100 million users in more than 230 countries, Kakao Talk is a multi - platform (多平台) texting application that allows users to send and receive messages for tree. With Kakao Talk, users can message each other one-on-one or in group chats with unlimited numbers of friends. You can also choose from more than 250 animated emoticons and share them with friends.

　　Line (Japan)

Users: more than 200 million