If you struggled through high school algebra,you-|||-probably thought you simply weren`t born good at-|||-math. You might have been right,at least according to-|||-a new study by Johns Hopkins University psychologists-|||-that suggests that math ability is linked to your inborn-|||-number sense".Also known as"approximate number-|||-system",number sense is inherent in all animals-|||-including humans.It`s what we use to instantly estimate-|||-how many people are in a meeting or how many free-|||-seats are in a movie theater.Animals use it to figure-|||-out where the most plants or games are and to track-|||-how much food they`ve gathered.-|||-Now scientists have measured number sense in-|||-preschoolers-who are too young to have received any-|||-formal math education-and linked it to performance of-|||-tests of math ability."The relationship between-|||-number sense`and math ability is important and-|||-intriguing(迷人的)because we believe that`number-|||-sense`is universal,whereas math ability has been-|||-thought to be highly dependent on culture and language-|||-and takes many years to learn."said study author-|||-Melissa Libertus in a statement.-|||-Past research has associated number sense with-|||-math ability in older children,but Melissa Libertus and-|||-her team`s study involved 200 younger children with an-|||-average age of 4.The children were given number-|||-sense test that involved viewing groups of blue and-|||-yellow dots on a computer screen and estimating which-|||-color group had more dots. Each child then took math-|||-ability tests consisting of numbering skills,numeral-|||-literacy,calculation skil and other abilities.-|||-Kids who did better at estimating the dots in the-|||-first test also did better at the math tests,the researchers-|||-found,suggesting that at least some math ability may-|||-be linked to one`s inborn number sense. The study-|||-authors also gave the kids tests of general intelligence to-|||-rule out the possibility that those who did better on the-|||-math tests were simply those who performed well on all-|||-tests.-|||-1.According to the passage, number sense is mainly-|||-__ .-|||-A.developed in primary school-|||-B.inherited from parents-|||-C.evolved in nature-|||-D.developed in high school-|||-2.Scientists usually consider math ability __ --|||-A.takes a short time to learn-|||-B.lowly depends on culture-|||-C.lowly depends on language-|||-D.mainly relies on language and culture-|||-3.How many kinds of skills did Melissa Libertus test-|||-the children?-|||-A.Only one skill. B.Two skills.-|||-C.Three skills. D.At least four skills.-|||-4.The underlined phrase"rule out"in the fourth-|||-paragraph refers to" __ "-|||-A.get rid of B.consist of-|||-C.connect with D.spread out-|||-5.What`s the main idea of the passage?-|||-A.Help kids achieve greater heights in math-|||-B.Kids`number sense mainly relies on teaching-|||-C.People may be born good (or bad)at math.-|||-D.Math ability has nothing to do with number-|||-sense.