【单选题】
A、webcam costs about $50. More expensive models come with added{{U}} (31) {{/U}}, such as better picture resolution. Two leading makers, Logitech andCreative, offer a range of models,{{U}} (32) {{/U}}software is includeD、There is no extra Internet{{U}} (33) {{/U}}to send or receive video images, though you’ll have to{{U}} (34) {{/U}}for a free instant messaging service.Everyone can see and hear one another in{{U}} (35) {{/U}}time. Grandparents can see their grandkids more{{U}} (36) {{/U}}Webcams can work with almost any computer bought in the past five years and can{{U}} (37) {{/U}}long distance phone bills.
{{U}} (38) {{/U}}you have broadband, that is, a high-speed cable-modem orDSL connection, images may{{U}} (39) {{/U}}a long time to download,{{U}} (40) {{/U}}a slide show rather than a movie. While webcams are easy to link to your computer, learning to{{U}} (41) {{/U}}the software can take time. You have to make. some rearrangement with the configurations.
{{U}} (42) {{/U}}you have a 56k modem and the people you want to{{U}} (43) {{/U}}won’t mind seeing live shots instead of perfect video, a webcam is still fun,{{U}} (44) {{/U}}before you buy, be sure everyone,{{U}} (45) {{/U}}for the same IM service.
B．with
C．from
D．in
网考网参考答案：A
网考网解析：
[解析]本题考查介词的用法。文中提到利用即时信息服务，可以把图像传递给他人，所以这里应该是一个表示方式的介词，via有“通过，经由”之意，所以答案为A。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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