Yunnan ______from serious drought since 2009, so it’s our duty to save water every day.

A．sufferedB．has been sufferingC．has been sufferedD．have been suffering

B

解析試題分析：考察時態(tài)。本題中的時間狀語是since 2009,since通常與現(xiàn)在完成時連用。動詞suffer from…患….；遭受..；句意：自從2009年以來云南省一直都遭受干旱，所以每天都節(jié)約用水是我們的責任。根據(jù)句意說明是從2009年以來，一直都是這樣的情況，所以使用現(xiàn)在完成進行時。故B正確。
考點：考察時態(tài)
點評：時態(tài)題的考查關鍵是抓住句子的上下文含義和句中的時間狀語。要根據(jù)時間狀語來選擇合適的時態(tài)，在平時的學習中要注意積累有關時態(tài)的用法和各種時態(tài)的特殊之處。如since， so far等經(jīng)常與現(xiàn)在完成時連用。在條件狀語從句中用一般現(xiàn)在時代替將來時等等。

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