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Passage 1-|||-She is widely seen as proof that good looks can last for ever.But,at nearly 500-|||-years of age,time is catching up with the Mona Lisa.-|||-The health of the famous picture,painted by Leonardo da Vinci in 1505,is getting-|||-worse by the year,according to the Louver Museum where it is housed.-|||-"The thin,wooden panel(画板)on which the Mona Lisa is painted in oil has-|||-changed shape since experts checked it two years ago."the muscum said.Visitors have-|||-noticed changes but repairing the world`s most famous painting is not easy.Experts are-|||-not sure about the materials the Italian artist used and their current chemical state.-|||-Nearly 6 million people go to see the Mona Lisa every year,many attracted by the-|||-mystery of her smile."It is very interesting that when you`re not looking at her,she-|||-scems to be smiling,and then you look at her and she stops,"said Professor Margaret-|||-Livingstone of Harvard University."It`s because direct vision is excellent at picking up-|||-details,but less suited to looking at shadows(阴影),Da Vinci painted the smile in-|||-shadows."-|||-Da Vinci himself loved it so much that he always carried it with him,until it was-|||-eventually sold to France`s King Francis Iin 1519.-|||-During World War ll,French hid the painting in small towns to keep it out of the-|||-hands of German forces.-|||-Like many old ladies.the Mona Lisa has some interesting stories to tell.-|||-31.In the first paragraph, "catchin up with" means __ _.-|||-A.coming up from behind B.getting along with-|||-C.making up for D.having effect on-|||-32.It is difficult to repair this painting due to __-|||-A.painting material B.wooden panel-|||-C.long history D.good name-|||-33.Mona Lisa is smiling when you look __-|||-A.at her B.from the comer of your eyes-|||-C.into the shadows D.for details-|||-34.Para.4 is mainly about __-|||-A.the history of the Mona Lisa B.the condition of the Mona Lisa-|||-C.the secret of Mona Lisa`s smile D.the secret of Mona Lisa-|||-35.During World War II the famous painting was in __ .-|||-A.Italy B.France C.Britain D.Germany

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