解析:选B。在It’s high time that...结构中，that从句中的谓语动词常用过去时。

　　15.The rescue team spared no________in search of the missing climbers from the great university，but ended in vain.

　　A.pain

　　B.force

　　C.efforts

　　D.labour

　　解析:选C。考查动宾搭配，spare no effort(s) to do/in doing sth.“不遗余力做某事”。spare no pains，“不遗余力”，pains为复数形式。

　　Ⅱ.阅读理解

　　A

　　(2016·原创)Shock account of Bin Laden’s death

　　A new version of the killing of al-Qaeda(基地组织) terror chief Osama Bin Laden calls into question the official White House version of events.

　　Bin Laden died inside a walled compound in the Pakistani garrison town(有驻防的城市)of Abbottabad, outside Islamabad.His death came after a ten-year search by US intelligence teams following al-Qaeda’s 9/11 attacks on the US，and was immediately greeted as a triumph by President Barack Obama’s administration.

　　It also provided the US with a chance to declare victory in its War on Terror. But details released this week from Mr Pfarrer’s new book claims the reality was rather different, and that by announcing the death of the terrorist leader so quickly the US missed a chance to use intelligence seized during the raid that could have led them to other al-Qaeda leaders. Bin Laden was armed when he was killed by US Navy Seal commandos(突击队)and it took 90 seconds, not 45 minutes，to kill him，Mr Pfarrer claims，based on interviews with the Seals involved in the operation.

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