又有一道 After more than four decades of research and development, a new type of jet engine is being tested that could eventually propel aircraft anywhere in the world within two hours or help boost cargoes into space at significantly lower costs than current methods permit. A. tested that could eventually propel aircraft anywhere in the world within two hours or help B. tested that could eventually have the capability of propelling aircraft anywhere in the world within two hours or to help C. tested, eventually able to propel aircraft anywhere in the world within two hours, or helping D. tested, and it eventually could propel aircraft anywhere in the world within two hours or helping E. tested, and it could eventually have the capability to propel aircraft anywhere in the world within two hours or help 答案E,错选了A, that 的用法不熟, T T 我真是太弱了 还有这道为何选E不选C?请教大牛高见! Q10: Marconi’s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is precisely the opposite, a tool for communicating with a large, public audience. - Marconi’s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is
- Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is
- Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become
- Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become
- Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,
[此贴子已经被作者于2009/9/4 21:27:34编辑过] |