(2013·江西南昌一模)Why ________ it get colder when we climb up a mountain? We are getting nearer to the sun!

A．ought to B．would

C．should D．must

 

C

【解析】C　句意：我們爬到山上怎么會更冷呢？我們更靠近太陽��！should與why，how等疑問詞連用，表示拒絕、惱怒或驚奇，又如：How should I know？我怎么知道呢？Why should he think that？他為什么那么想呢？

 

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