答案：absorbed　考查非谓语动词。句意：当他三个小时后回来时，他们仍坐在沙发上，聚精会神地交谈。be absorbed in为固定搭配，意为“专心于”，所以此处应用absorb的过去分词形式，作伴随状语。

　　9．—Who is ________(blame) for the shooting at a movie theatre in America?

　　—A gunman named James Eagan Holmes.

　　答案：to blame　问句句意：谁要为发生在美国电影院的枪击案负责？be to blame为固定短语，意为“该受责备”。本身为被动含义，不用于被动语态。

　　10．(2017·大连一中第三次月考)________(reduce) the gap between the rich and the poor is one of the main challenges facing the government.

　　答案：Reducing　句意：缩小贫富之间的差距是这届政府面临的主要挑战之一。

　　.阅读理解

　　(2017·合肥市第一次质检)

　　For the first time, researchers have discovered that some plants can kill insects in order to get additional nutrients. New research shows that they catch and kill small insects with their own sticky hairs near the roots and then absorb nutrients through their roots when the insects are killed and fall to the ground.

　　Professor Mark Chase, of Kew and Queen Mary, University of London, said: “The cultivated (改良的) tomatoes and potatoes still have the hairs. Tomatoes in particular are covered with these sticky hairs. They do trap small insects on a regular basis. They do kill insects.”

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