success.

　　Make sure your child understands that even though the results of the positive choices may not be seen right away, they are building on each other and taking him or her on a path that will lead to success.

5．We learn from Paragraph 2 that ________．

　　A．dealing with big events is most important in one's life

　　B．little choices seldom have lasting effects on one's life

　　C．teens should try to focus their attention on big choices

　　D．many teens fail to realize the importance of little choices

6．Which of the following words can be used to describe Kyle Freas?

　　A．Kind­hearted. B．Creative.

　　C．Naughty. D．Self­confident.

7．The author mainly discusses the relationship between ________.　

　　A．little choices and big choices

　　B．teens' goals and their actions

　　C．positive and negative decisions

　　D．small positive choices and success

8．The text is most probably written for ________．

　　A．teenagers B．parents

　　C．pupils D．teachers

　　C

　　Want to improve your math skills without working hard? Simply zap (击打) the brain with a weak current of electricity and then, all your problems will be solved! At least that's the claim being made by a team of British scientists from London's Oxford University.

　　The main aim of the experiment, conducted on a group of student volunteers from Oxford University and University College London, was to test if parts of the brain could be shocked into getting it to work better with numbers.

　　To test this, 15 students, divided into three groups, were asked to solve the same two mathematical problems every day for a week. The problems, which involved identifying the larger of two numbers and plotting one on a number line, were made a little more challenging by replacing the numbers 1­9 with symbols.