Language learning apps are very popular in app stores worldwide – and are said to be revolutionizing language learning. These apps offer opportunities to practice grammar and can be a very rewarding way to learn vocabulary. But there has been a discussion about just how effective such apps can be – particularly when it comes to other skills such as writing and speaking.Among the most popular language learning apps are Duolingo and Busuu. Research has mainly found positive results on the use of both Duolingo and Busuu. But most of this research concentrates on studies with learners who sign up for language courses – learners are using the apps for extra practice – so the results don’t provide a good snapshot (简况) of language learning through apps.My recently published research study of 4,095 Busuu users aimed to find out more about who uses these apps, how they use them, and what they think of app-based learning. Ultimately, I wanted to find out if users can actually learn a language with an app.Busuu provides learning materials for 12 different languages and has more than 60 million registered users. It offers a “freemium” model where some content is available for free and some is available behind a subscription paywall.The research found that there was an almost even split between male and female users, and more than half of the respondents were between 18 and 25. More than half consider themselves to be at the beginner level and the proportion of users decreases as their language levels go up. Most people use the app because of personal interest, holiday travel, career goals or personal aspirations, or because they want to study or live abroad. We also found that female users tend to use it less often but for longer periods of time than male users.1. According to Para.1, language learning apps________.A) are going to replace traditional learning methodsB) provide a good way to learn vocabulary C) are effective in improving writing skillsD) make grammar learning more efficient2. Why does the author think the present research fails to offer a good snapshot of language learning through apps?A) The research was mainly based on the use of Duolingo and Busuu.B) The results that the research has found were all much too positive.C) The learners the research studied have taken other language courses. D) The research focused only on learners’ writing and speaking skills.3. In his / her recently published research study, the author ________.A) tried to uncover whether users can actually learn a language with an app B) worked to find out who benefits the most from language learning appsC) followed and interviewed more than 4,000 Duolingo and Busuu usersD) aimed to discover which language learning app is the most effective4. What do we know about Busuu?A) It is a very popular language-learning center.B) It provides good learning materials for free.C) It has more than 60 million registered users. D) It offers classes only after your subscription.5. What does the author find out in his / her research?A) Female users tend to use for longer periods of time. B) Most of the users are women who are aged 18 to 25.C) Most people choose the app only out of personal interest.D) Most of the users think they are at a medium level.

give upA. 屈服、让步B. 宣布、发布C. 赠送、送给D. 停止、放弃

91.[判断题] All infections, apparent or inapparent, are likely to increase biological variability and hence result in a decrease in animal use. A 对 B 错A. 对B. 错

n. 假释genretuboliveparole

Put on sunglasses or the sunlight will dazzle you and you won't be able to see.A. 使应接不义；使不堪重负；使不堪承受B. 淹没；浸没C. 挤出；挤压D. 使目眩；使眼花

SIP Final Response 指的是 status line 的数字标识（）A. 200B. >200C. >=200D.

( ) supply chain can response fast and flexibly towards the customer demand through the concentrated inventory management and sharing partners’ capacity to reduce risks.A. EfficientB. ResponsiveC. Risk preventionD. Agile

单选题请阅读Passage 1，完成第小题。 Passage 1 In his book The Tipping Point, Malcolm Gladwell argues that "social epidemics" are driven in large part by the actions of a tiny minority of special individuals, often called influentials, who are unusually informed, persuasive, or well-connected． The idea is intuitively compelling, but it doesn´t explain how ideas actually spread． The supposed importance of influentials derives from a plausible-sounding but largely untested theory called the "two-step flow of communication": Information flows from the media to the influentials and from them to everyone else． Marketers have embraced the two-step flow because it suggests that if they can just find and influence the influentials, those selected people will do most of the work for them． The theory also seems to explain the sudden and unexpected popularity of certain looks, brands, or neighborhoods． In many such cases, a cursory search for causes finds that some small group of people was wearing, promoting, or developing whatever it is before anyone else paid attention． Anecdotal evidence of this kind fits nicely with the idea that only certain special people can drive trends． In their recent work, however, some researchers have come up with the finding that influentials have far less impact on social epidemics than is generally supposed． In fact, they don´t seem to be required of all． The researchers´ argument stems from a simple observation about social influence: With the exception of a few celebrities like Oprah Winfrey--whose outsize presence is primarily a function of media, not interpersonal, influence--even the most influential members of a population simply don´ t interact with that many others． Yet it is precisely these non-celebrity influentials who, according to the two-step-flow theory, are supposed to drive social epidemics, by influencing their friends and colleagues directly． For a social epidemic to occur, however, each person so affected must then influence his or her own acquaintances, who must in turn influence theirs, and so on; and just how many others pay attention to each of these people has little to do with the initial influential． If people in the network just two degrees removed from the initial influential prove resistant, for example, the cascade of change won´ t propagate very far or affect many people． Building on the basic truth about interpersonal influence, the researchers studied the dynamics of social influence by conducting thousands of computer simulations of populations, manipulating a number of variables relating to people´s ability to influence others and their tendency to be influenced． They found that the principal requirement for what is called "global cascades"—the widespread propagation of influence through networks--is the presence not of a few influentials but,rather, of a critical mass of easily influenced people． By citing the book The Tipping Point, the author intends to__________． A．analyze the consequences of social epidemics B．discuss influentials' function in spreading ideas C．exemplify people' s intuitive response to social epidemics D．describe the essential characteristics ofinfluentials

1 Form compound nouns with the words in the box. year friendship hall intelligence pot sport activity1 lecture ______2 extracurricular ______3 gap ______4 artificial ______5 extreme ______6 melting ______7 lifelong ______2 Complete the sentences with the correct form of the compound nouns you formed in Activity 1.1 It seems that ______ like skydiving and bungee jumping are becoming popular among university students.2 She formed ______ with three classmates from her first Literary Theory class in college.3 My presentation about the evolution of Chinese characters is scheduled for 9:30 tomorrow morning in the ______.4 Many famous universities in the world are becoming ______, with students coming from every corner of the globe.5 In some countries, high school students need to take part in ______ to gain admission to their ideal university.6 Whether you spend your ______ traveling or volunteering, you will have a unique experience.7 Our computer science department offers interesting classes that discuss ______, attracting students with various majors.

vehicleA. 垂直的,直立的B. 交通工具,车辆19C. 证实,证明D. 小贩,摊贩