B．He was inspired by a blind woman.

　　C．He found it hard to use a guide dog.

　　D．He noticed existing tools' weaknesses.

　　解析：选B　细节理解题。由第三、四段可知，亚历克斯受到一位盲人女士的启发，想出了这个创意。

　　2．The bat probably uses sonar to ________.

　　A．keep its balance in flight

　　B．block harmful sound waves

　　C．communicate with other bats

　　D．find out the position of objects

　　解析：选D　推理判断题。由第六段中的"works by using sound waves to discover objects in the users' path and show how close things are to them"可推断，蝙蝠用声呐系统对周围的物体进行定位。

　　3．Which of the following is expressed in McLaughlin's words?

　　A．Doubt.　　　　　　　　 B．Surprise.

　　C．Praise. D．Puzzle.

　　解析：选C　推理判断题。由倒数第三段可知，McLaughlin的这番话饱含着对亚历克斯的赞扬。

　　4．What is Alex preparing for at present?

　　A．A show of his iAid. B．His college studies.

　　C．An awards ceremony. D．The speech at We Day.

　　解析：选A　细节理解题。由倒数第二段中的"Alex is now working closely with the team at the science centre to hold an exhibition for his invention."可知，他正在筹备他这项发明的展览。

　　B

　　I plan to remember this year's vacation season with just two words: Never again. Never again will I take all my technology along.

　　When I first visited my in­laws' cabin in Ontario's north woods 35 years ago, there was no such thing as the Internet. The nearest telephone was one mile away, and we were beyond the reach of television. Our media diet consisted of a battery­powered radio. I know I risk sounding like an aging crank (怪人), but the life then was simple.

Now we're burdened with modern civilization. The cabin is just close enough to civilization to get a strong cellphone signal. Instead of browsing dog­eared summer­house mystery novels, this year we browsed the Internet. Instead of long evenings of poker, we checked our Twitter and updated our Facebook pages.