13．The pollution in Beijing is expected to improve，________ a series of air pollution control measures．（　�。�
A．regardless ofB．but forC．thanks toD．such as

分析 句意：由于采取了一系列空氣污染的措施，北京的空氣污染有望得到改善．

解答 答案C． A項"不管，不顧"；B項"要不是因為"；D項"例如"；C項"由于"；根據(jù)"The pollution in Beijing is expected to improve"可知，"空氣污染得到改善"這個結果是由于"采取了一系列空氣污染的措施"，因此C項符合語境，故選C．

點評 本題考查連詞的辨析．連詞的詞義辨析要放在上下文的語境中進行，要注意上下文的語義的串聯(lián)以及邏輯關系的推理．關鍵還是在平時學習的過程中，多積累多總結多記憶．

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