If you take a glimpse at the map of the United States, you will find major cities scattered on her eastern and western coasts. If you take a (1) over these cities at night, you will have an illusion that there were (2) glittering on the horizon, (3) colorful and brighter than (4) in the sky.
Starting from settlements of early (5) , villages and small towns have developed, (6) and modernized. Now over 70 percent of the nation’s (7) reside in metropolitan areas (8) only one percent of the nation’s land area. The American (9) house the might of her industries, activities of her (10) enterprises and daily (11) of her financial institutions. (12) , academic institutions and cultural facilities (13) locate in her major cities. (14) , they are the glittering diamonds on the crown of the U.S. empire.
But the American cities become the (15) of their deve
A. planned
B. pleased
C. presented
D. plagued
A webcam is a digital camera that sends video images to other computer users. It’s about the (1) of a golf ball and typically (2) on top of your computer monitor. Once the webcam is (3) to the USB port of your computer with the necessary software,(4) images of you can be sent to one or more users over the Internet (5) an instant messaging(IM) service.
A webcam costs about $50. More expensive models come with added (6) , such as better picture resolution. Two leading makers, Logitech and Creative, offer a range of models,(7) software is included. There is no extra Internet(8) to send or receive video images, though you’ll have to (9) for a free instant messaging service. Everyone can see and hear one another in (10) time. Grandparents can see their grandkids more (11) Webcams can work with almost any computer bought in the past five years and can (12) long distance phone bills.
(13) you have broadband, that is, a high-speed cable-modem or DSL connection
A. reach
B. touch
C. know
D. show
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