问答题 《复合题被拆开情况》 A customized, constantly-updating newspaper used to be the stuff of science fiction. Now, thanks to tablet devices, there are several, such as Livestand, a news app launched by Yahoo I, Editions, created by AOL, and Flipboard, which Google tried to buy last year. These corporategiants aim to cash with on the desperation of traditional news publishers.【S1】________A study last month by the Pew Research Center found that, less than two years after the iPad went on sale, 11% of American adults now own atablet and more than half of this group read news on them each day. They【S2】________are more avidly news consumers than those without tablets, and for long【S3】________articles they prefer their tablets both to ordinary computers and to print. For news outlets facing dwindling print circulations and meagreonline advertising rates, this is glimmer of hope. Yet turning this【S4】________readership into avenue is tricky. Not all publishers can afford to build【S5】________their own tablet apps. For those that can, readers are somewhat readierto pay for subscription than on the web; advertising rates are six to ten【S6】________times higher than online. But it is not yet clear how many readers will make the switch. And for publishers without an app, tablet users are just like other web users: worth very little money. Flipboard and its rivals let users create a personalized digital magazine from a mix of sources, which can include magazines,newspapers, blogs and articles posting by their contacts on Facebook or【S7】________Twitter. On the web, similar "aggregator" sites have a bad name asfreeloaders where create no content of their own. And the app versions【S8】________have been of dubious benefit thus far to publishers, which must providetheir stories free in turn for the vague hope of getting more readers. But【S9】________compared with a website cluttered in with links and ads of low tastes,【S10】________the apps are clean, stylish and nice to use. And some have started carrying glossy, high-end ads and sharing the revenue with publishers.《问题》：【S4】