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B.Her significant goal.C.Her anxiety about hard work.variatioD.Her famously intelligent mind.The tear可26.What does Flora say about volunteer service?and fourA.Its effect depends on sex.B.Its quality is difficult to define.C.It is more meaningful to women than men.D.It has a good effect on individuals and society26.Whicb of the following can best deseribe Flora?A.Sensitive and artistic.B.Athletic and energetic.量C.Reserved and unemotional.D.Determined and considerate.27What does the author seem to convey in the last paragraph?A.Few volunteers follow Flora.B.Apples are Flora's favorite fruit.C.Flora's father plays a role in her life.D.Flora has realized her political dream.dC8Dogs are born to socialise with people because we raise them that way.Two-month-olddogs can already recognise when people are pointing at objects and will stare at our faces when舒they're spoken to-both signs that dogs have an innate capacity to interact with us throughbody language.期"Although individual relationships with people might influence that behaviour,at least 40percent of this ability comes from genetics alone,"says Emily Bray at the University of Arizona.期"Over the course of keeping dogs,there has been a clear selection for these social skills,"shesays."It's something that's deep in them and that comes out at a really young age even beforethey have much experience with humans."Bray and her colleagues tested these types of skills in 375 eight-week-old dogs that werechosen to become service dogs.Bray says,"It was the earliest age when the dogs could carryout sueh-experiments because they were only just old enough to be motivated by food rewards."The researchers found that pointing at food hidden under a cup helped the dogs to find itnearly 70 percent of the time.The success rate was high from the start,meaning they werentlearning tofollow pointing buhad already known todo soIna ones,the randomyselected dogs couldn't find food hidden under one of the two cups at a higher rate,indicatingthat they weren't simply smelling it Much of the variation in different dogs'abilities to followfinger-pointing is explained by geneticsUsing statistical analyses based on the dogs'parentsand other relatives,the researchers found that genetic factors were responsible for much of·23-07C,【高三英语第5页（共10页）】