Basedontheiranswers,participantsweredividedintogroups.Onegroupwasmadeupof people who wereparticularlyafraid of math andparticipants in theother groupwere more comfortable with the subject.

Bothgroupswerethengiveneithermathtasksorwordtasks.Whenamathtaskwasgoingto comenext,ayellowcirclewouldappearbutwhenawordtaskwassoontocome,abluesquare would be shown.

Usingabrain-scanmachine,scientistsnoticedthatwheneverpeoplefromGroupOnesawa yellowcircle,theirbrainwouldrespondinawaysimilartowhentheirbody isfeelingpain.Itwas likethepaintheywouldfeel,forexample,iftheyburnttheirhandonahotstove.Butthey reacted less stronglywhen theyknew that theywould be facedwith a word task.

However, scientists sawno strong brain response frompeople in the second group.

Mathcanbedifficult,andforthosewithhighlevelsofmathematics-anxiety(HMA),mathis associatedwithtension,apprehensionandfear.“Whenyouarereallythinkingaboutthemath problems,yourmindisracingandyouareworryingaboutallthethingsthatcouldgowrong,” explainedIanLyonsfromUniversityofChicago,US,leaderofthestudy.“Thehigheraperson’s anxietyofamathstask,themoreheactivatedbrainregionsassociatedwiththreatdetection,and the experienceof pain.”

Moreinterestingly,thebrainactivitydisappearedwhenparticipantsactuallystarteddealing with the math tasks.“Thismeansthat it’s notthatmath itselfhurts; rather, theanticipation of mathis painful,” Lyonssaid.

Basedonthestudy,scientistssuggestedthatthingscouldbedonetohelpstudentsworryless and move past their fearof math, whichmightmean theyperformbetter in tests.

28. In the firststage, scientists ask participants some questions to _.

A. see whether math hurts B. find outhowmuch theyfearmath

C. observe how their brain response D. test their endurance ofpain

29. The underlined word“the anicipation of math”is closestin meaning to .

A. the attemptof learning math

B. the motivation to work outmath problem

C. the effort to understand math

D. the actof thinking aboutmath

30. Which is the best title for the Passage?

A.How to overcome math fear.

B.Physicalpain affects mathperformance.

C. Mathpain in your brain.

D.Unknown truth aboutpain.

31. Whatcanbe concluded fromthe experiment?

A.The anticipation of math has no relation to students’ confidence in math.

B. Moderate mathematic anxietypromotes students’ academic performance.

C. Effective solutions have been workedout to lower students’ anxietyof math.[:.]

D.Physicalpain caused byHMAdisappears in the process ofdoing math problem.

D

Adults are happy to tell their children that crusts (面包皮) will give them curly hair, carrots will help them see in the dark, and spinach will make them strong. Even though adults know it's not totally true, they think it's good for their children's health, a study had found.

In a study about 31 per cent of adults said they once told their children the curly hair tale, and 36 per cent said they'd been told the same thing by their mother or father. Among the over-50s, almost half said they'd been promised curly hair if they ate their crusts. A quarter of the 2,000 adults questioned in the study told their children carrots would help them see in the dark. This could be true to some extent because of the high levels of vitamin A and beta-carotene in root vegetables.

Another favorite among parents is that milk will make one strong. A third surveyed said their parents told them this, and about 29 per cent said they told their children the same thing. But while there is plenty of evidence to suggest milk is good for people's health, there are also a lot of scientific papers saying it isn't.

Thanks to Popeye, spinach is also fed to children, along with the idea that it will make them strong. While there is also some truth in this one, scientists now believe it is not the iron, but the inorganic nitrates (无机硝酸盐) that improve physical power.

One in seven of the surveyed admitted telling their little ones that runner beans will make them run faster, which is nothing more than wordplay and has no basis in science. Almost one in five adults were subjected to the same tale in childhood.

Just over one in 10 parents told their children green food would turn them into a superhero, and a quarter admitted hiding vegetables in meals.

Lyndsay Jones, spokesman for Persil Washing Up Liquid, said, "It's clear that the most persuasive stories about food are passed on from generation to generation. Our research shows that the ideas continue, and we tell our kids the same things our parents told us, even if they're not always entirely true."

Crusts may not make your hair curly, but there's plenty of research that says crusts contain more of the goodness than the rest of a loaf. Hopefully, as a result of our Cook with Kids promise, more parents will be encouraged to spend time with their children in the kitchen and teach them the truth about food.[:.]

32. We can know from Paragraph 3 that ________.

A. a third people are forced to drink milk by their parents

B. milk is beneficial to children's physical strength

C. there is doubt whether milk is helpful to people's health

D. about 29 percent people wish their children good health

33. Which of the following does Lyndsay Jones agree?