（）是用数字技术对现有的模拟电话用户线进行改造，使它能够承载宽带业务。
A. xDSL
B. HFC
C. FTTx
D. WIFI
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城市地理学研究的核心问题是
A. 城市的空间组织演化
B. 城市的发展模式
C. 城市的发展条件
Which of the following sentences has a misplaced modifier?
A. He only talks about changing his working plan. [Intended meaning: He only talks but does nothing else, about changing his working.]
B. A girl appeared in my dreams that sang like an angel.
C. The book on the shelf is hers.
D. All of the above.
Which of the following sentences has a misplaced modifier?
A. He kicked the ball only several meters away. [Intended meaning: He didn’t kick the ball too far, only a few meters away.]
B. She talked too quietly.
C. You had better express your options carefully in public.
D. None of the above.
The instructor just nodded to Ellen as she came into the classroom.The instructor nodded to Ellen as she came into the classroom. (This means the instructor did not speak or extend her hand; he only nodded.)
A. 对
B. 错
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