Directing the union are technological advances that have made it easier to store and rapidly transmit information into homes and offices. Fiber-optic cable, for example—made up of hair-thin glass fibers—is a tremendously efficient carrier of information. Lasers shooting light through glass fiber can transmit 250,000 times as much data as a standard telephone wire, or tens of thousands of paragraphs such as this one every second.The greatly increased volume and speed of data transmission that these technologies permit can be compared to the way in which a highway with many lanes allows more cars to move at faster speeds than a two-lane highway—hence, the information superhighway.
He ______ his considerable bulk between me and the window, so that I could not see out.
John boasted that he could finish the job all by himself in no time.
Ignorance and ______ prevent them from benefiting from modern medicine.
Professor Smith said to his students that no one should ______ the mistakes.
Part V Writing (15 points)Directions: For this part, you are allowed 30 minutes to write a composition of no less than 200 words under the title of “Science: Good or Evil”. Please write clearly on the Answer Sheet.