Подчеркните ing- form, определите ее функцию в предложениях. electronic learning electronic learning or e-learning is a general term used to refer to computer-enhanced learning. it is used interchangeably in so many contexts that it is critical to be clear what one means when one speaks of'е-learning'. in many respects, it is commonly associated with the field of advanced learning technology (alt), which deals with both the technologies and associated methodologies in learning using network and/or multimedia technologies. the worldwide e-learning industry is estimated to be worth over 38 billion euros according to conservative estimates, although in the european union only about 20% of e-learning products are produced within the common market. developments in internet and multimedia technologies are the basic enabler of e-learning. with content, technologies and services being identified as the three key sectors of the e-learning industry. growth of e-learning by 2005, more than 3.2 million students were participating in online learning at institutions of higher education in the united states. many higher education, for-profit institutions, now offer on-line classes. by contrast, only about half of private, non-profit schools offer them. the sloan report, based on a poll of academic leaders, says that students generally appear to be at least as satisfied with their on-line classes as they are with traditional ones. private institutions may become more involved with on-line presentations as the cost of instituting such a system decreases. properly trained staff must also be hired to work with students on-line.
