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18．No one can exactly tell us what ．（　　）

	A．	does Mona Lisa's smile mean		B．	Mona Lisa's smile means
	C．	Mona Lisa's smile does		D．	does Mona Lisa's smile

分析翻譯：沒有人能準確地告訴我們蒙娜•麗莎的微笑意味著什么．

解答答案：B．本題考查賓語從句，賓語從句用陳述語序，選項A和D是疑問句語序，所以選項A和D是錯誤的；連接詞在從句中作賓語、狀語或表語的句子是：連接詞+主語+謂語；此句連接詞what在從句中作賓語，助動詞does、do和did不能出現在從句中，這里是指蒙娜•麗莎的微笑意味著什么．故選B．

點評不管什么類型的賓語從句總是用陳述語序，即：從句的連接詞后是主語、謂語、賓語的語序，從句的時態要與主句的時態保持一致．

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