20．一Beijing International Airport，please!I'll be there by eight．
一              ，but I'11 try my best．（　�。�
A．It's impossibleB．I can't promiseC．All rightD．No problem

分析 --北京國(guó)際機(jī)場(chǎng)，謝謝!我要在8點(diǎn)鐘到達(dá)那里．
--我不敢打保票，但我會(huì)盡力．

解答 答案B．
A項(xiàng)"不可能"；C項(xiàng)"好吧"；D項(xiàng)"沒(méi)問(wèn)題；"B項(xiàng)"不敢打保票"；根據(jù)下文中"but will do my best"得知，答話者不敢打保票，但會(huì)盡力．因此B項(xiàng)符合語(yǔ)境，故選B．

點(diǎn)評(píng) 本題考查情景交際．解答此類(lèi)題目首先應(yīng)該讀懂句意，分析上下文語(yǔ)境和邏輯關(guān)系．其次對(duì)每個(gè)選項(xiàng)中的交際用語(yǔ)的適用情況要掌握，根據(jù)語(yǔ)境鎖定正確答案．關(guān)鍵平時(shí)學(xué)習(xí)中要對(duì)交際用語(yǔ)多積累多總結(jié)反復(fù)記憶．

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