2. 外语
  3. Because short messaging service is a kind of data communication, second generation wireless cannot support it. One of the great

Because short messaging service is a kind of data communication, second generation wireless cannot support it. One of the great

admin2013-06-02  64
问题 Because short messaging service is a kind of data communication, second generation wireless cannot support it.
One of the great drawbacks of cellular networks is its expensive implementing cost.
选项
答案NG。
解析 由题干中的cellular networks定位到第一个小标题下第二段，再由drawbacks定位到到该段第四、五句 Some of the disadvantages include...to support those higher data rates。题干中drawbacks与原文中disadvantages同义；题干指出expensive implementing cost是cellular net- works的缺点，但是在本段文字中所提到的缺点如singular point of failure, no lead balancing, spectral inefficiencies等等，并没有提及蜂窝网在铺设过程中的费用问题。所以判定该题为NG。
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