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A webcam is a digital camera that sends video images to other computer users. It’s about the 【C1】______ of a golf ball and typ
A webcam is a digital camera that sends video images to other computer users. It’s about the 【C1】______ of a golf ball and typ
admin
2009-05-09
34
问题
A webcam is a digital camera that sends video images to other computer users. It’s about the 【C1】______ of a golf ball and typically 【C2】______ on top of your computer monitor. Once the webcam is 【C3】______ to the USB port of your computer with the necessary software, 【C4】______ images of you can be sent to one or more users over the Internet 【C5】______ an instant messaging(IM) service.
A webcam costs about $50. More expensive models come with added 【C6】______ , such as better picture resolution. Two leading makers, Logitech and Creative, offer a range of models, 【C7】______ software is included. There is no extra Internet 【C8】______ to send or receive video images, though you’ll have to 【C9】______ for a free instant messaging service. Everyone can see and hear one another in 【C10】______ time. Grandparents can see their grandkids more 【C11】______ Webcams can work with almost any computer bought in the past five years and can 【C12】______ long distance phone bills.
【C13】______ you have broadband, that is, a high-speed cable-modem or DSL connection, images may 【C14】______ a long time to download, 【C15】______ a slide show rather than a movie. While webcams are easy to link to your computer, learning to 【C16】______ the software can take time. You have to make. some rearrangement with the configurations.
【C17】______ you have a 56k modem and the people you want to 【C18】______ won’t mind seeing live shots instead of perfect video, a webcam is still fun, 【C19】______ before you buy, be sure everyone, 【C20】______ for the same IM service.
【C7】
选项
A、so
B、but
C、for
D、and
答案
D
解析
本题考查连词的用法。文中提到罗技和创新是两大主要制造商,通常生产各种型号的摄像头,并且配备了必要的安装软件。此处应该选择一个表示并列的连词。所以答案为D。
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公共英语三级笔试题库公共英语(PETS)分类
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公共英语三级笔试
公共英语(PETS)
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