14．We must get up at 7：00tomorrow morning，_____we will be late for the meeting．（　�。�
A．andB．orC．but

分析 我們明天早晨必須在7點(diǎn)鐘起床，否則我們開會(huì)要遲到了．

解答 答案：B and，和，表示并列關(guān)系；or，或者，否則，要不然；表示條件關(guān)系；but，但是，表示轉(zhuǎn)折；根據(jù)句中信息，"get up at 7：00tomorrow morning""we will be late for the meeting"二者之間是條件關(guān)系，即"在7點(diǎn)鐘起床"是"不遲到"的條件；故選B．

點(diǎn)評(píng) 利用給出的四個(gè)連詞的相關(guān)語法知識(shí)進(jìn)行分析比較，通過題干中的已供信息，捕捉到解題線索，從而得出正確答案．

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