题目内容

From the text we learn that the laser can_________
[A] cut a structure from a right position
[ B ] design parts of a complex structure
[ C] measure the distance between planets
[ D] predict the movement of earth' s plates

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Directions :
Read the following text. Choose the best word or phrase for each numbered blank and mark A, B,C, or D on, ANSWER SHEET1.
A webcam is a digital camera that sends video images to other computer users. It's about the(26) 0f a pool ball and typically (27) 0n top of your computer monitor. Once the webcam is(28) to the USB port of your computer with the necessary software, (29) images of you can be sent to one or more users over the Internet (30)an instant messaging(IM) service.
A webcam costs about $50. More expensive models come with added (31) , such as better picture resolution. Two leading makers, Logitech and Creative, offer a range of models, (32)
software is included. There is no extra Internet (33) to send or receive video images, though you'll have t0 (34) for a free instant messaging service. Everyone can see and hear one another
in (35) time. Grandparents can see their grandkids more (36)' Webcams can work with al-most any computer bought in the past five years and can (37) long distance phone bills.(38) you have broadband, that is, a high-speed cable-modem or DSL connection, images may (39) a long time to download, (40) a slide show rather than a movie. While webcams are easy to link to your computer, learning to (41)the software can take time. You have to make some rearrangement with the configurations.
(42) you have a 56k modem and the people you want t0 (43) won't mind seeing live shots
instead of perfect video, a webcam is still fun. (44) before you buy, be sure everyone (45) for
the same IM service.
26.
[A] weight
[B] size
[C] volume
[D] space

that we should_________
[ A] make rules and regulations for rubbish control
[ B] realize that environmental protection is an ideal
[ C] encourage environment-friendly packaging
[ D] raise the environmental awareness of tourists

[A] for
[B] and
[C] but
[D] so

简述第一批无产阶级工人报刊的情况。