7．【答案】B

　　【解析】词义猜测题。 根据倒数第二段上下文可以得知在KLOTHO中由于基因变体增大的大脑区域很容易衰退或产生精神疾病，所以较大的大脑区域功能更强。携带KL­VS一副与大脑结构是否增加对于平衡由疾病导致的认知确实很重要。可以得知选项B符合题意。

　　Ⅲ.语法填空

　　(2016陕西西安第七十中学11月检测)

　　Until about 150 years ago, the most important, expensive and renowned kind of painting was large­scale pictures that told a story, regarded as the 1.__________(hard) challenge for an artist.2.__________(choose) suitable subjects, artists had to be well­read.Then they had to know 3.__________ stories could be told without words, using only gestures and expressions.To create lifelike scenes, they had to understand perspective, lighting and anatomy.So history painting needed a lot of thought and_4.________.(imagine)．Large­scale pictures used to be reserved for grand religious or patriotic subjects, but that changed in the 19th century, as artists began creating history paintings based5.__________contemporary news stories.One of the first of these was The Raft of the Medusa, inspired by the wreck of6.__________French ship in 1816, which showed how art could have a powerful political impact.It presents a scene_7.__________ the survivors of the wreck on a raft littered with bodies try to signal to a distant ship.When they 8.__________(rescue), they told how they had been abandoned by their captain, while he sailed to safety in a lifeboat.Starving, they had to eat each other to survive—though this picture makes9.__________ look heroic rather than violent.The picture caused a huge outcry.Some people thought the artist meant to criticize the French king, 10.__________ had been involved in appointing the ship's captain.

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