不定项选择

Extranet是Internet的扩展

A．错误
B．正确

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单项选择题

Which of the following is NOT a characteristic of the Open University? ( ). A. It’s open to everybody. B. It requires no formal educational qualifications. C. No university degree is awarded. D. University courses are followed through TV, radio, correspondence, etc.

磕头撞脑什么意思？磕头撞脑怎么读？

答案：参考答案：
拼音：kē tóu zhuàng nǎo，简拼：ktzn
成语解释：磕、撞：碰。跑在地上叩...