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【简答题】
阅读理解。 The new iPhone 3G should please everyone. Its look and feel are only slightly improved, but a faster network loads Web pages more quickly, true GPS functionality allows it to easily find places nearby, and the new $199 price (down from $400) makes it an affordable luxury. Before deciding whether to buy, however, make sure you can actually take advantage of the iPhone 3G's high-speed data network. 3G stands for third-generation, which in non-geek speak translates to Web pages and mail messages that, ideally, load about three times faster than on the original iPhone. Even better, 3G coverage enables you to make a phone call and surf the Web at the same time. That's great, if you live or work in a place where the 3G network of AT&T(美国电话电报公司) (the sole wireless carrier of the iPhone) is active. That's not so great in cities like New York where AT&T's cellular coverage is awful. As one of my colleagues in New York City, who bought the original iPhone, commented, 'It's just a toy. You can't make phone calls on it, so I carry my Verizon phone with me all the time.' The real fun begins when you tap on the icon called 'App Store' and start browsing the hundreds of add-on applications that have been developed just for the iPhone. You'll find tons of games (I like JirboBreak, a free game inspired by the Atari classic Breakout) and mobile versions of popular websites like Pandora, Facebook, MySpace and the New York Times. Most apps will cost you, but the vast majority are $9.99 or less. The apps work on the old iPhones too, but you'll enjoy them a lot more on the iPhone 3G because many of the programs, including Yelp (local business reviews), Whrrl (mobile social networking) and UrbanSpoon (restaurant reviews), use your exact location - provided by the iPhone 3G's GPS chip - to make recommendations. The apps also load much faster over the 3G network. 1. The new iPhone 3G has following features except that _______ A. It looks and feels better B. It has a faster network C. It is easy to locate a place D. It is too expensive for people to buy 2. Why do one of my colleagues carry Verizon phone with him all the time? ______. A. Because iPhone 3G is just a toy B. Because he prefers Verizon phone better. C. Because AT&T's cellular coverage is terrible there D. Because Verizon phone enables him make a phone call and surf the Web at the same time 3. Which of the following statements is NOT true according to the passage. ____. A. App Store will offer you great fun. B. many apps have been developed for the iPhone. C. Most apps are very expensive. D. Pandora, Facebook, MySpace and the New York Times are popular websites. 4. From the passage we know that the attitude of the author toward iPhone 3G is _____. A. doubtful B. appreciative C. optimistic D. pessimistic
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参考答案:
举一反三
【单选题】断路器的绝缘水平是由__决定的。
A.
额定电流
B.
额定电压
C.
额定动稳定电流
D.
最高工作电压
【多选题】有线信道包括( )。
A.
明线
B.
电缆
C.
光缆
D.
卫星
【判断题】常见的有线信道包括明线、双绞线、同轴电缆和光纤等。
A.
正确
B.
错误
【多选题】有线信道包括以下哪些?
A.
明线
B.
对称电缆
C.
同轴电缆
D.
光缆
【多选题】有线信道包括以下哪些?
A.
闭路线缆
B.
同轴电缆
C.
光纤
D.
光缆
【简答题】常见的有线信道包括 、 、 。
【多选题】有线信道包括______________。
A.
架空明线
B.
光纤
C.
网线
D.
双绞线
【单选题】下列选项中,属于伦理行为原动力规律内容的有()。
A.
目的害己
B.
目的害人
C.
目的利人
D.
目的利己
【判断题】通信信道分为有线信道和无线信道,其中有线信道主要包括双绞线网线、同轴电缆和光纤
A.
正确
B.
错误
【多选题】狭义信道仅指传输媒介,是发送设备和接受设备之间的可以用于传输信号的媒介,可以分为有线信道和无线信道,其中无线信道包括
A.
架空明线
B.
对称线缆
C.
短波
D.
地面微波接力
E.
卫星通信
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