雅思聽(tīng)力訓(xùn)練1：The eyes have it

I still tend to move my fingers, almost subconsciously, when doing arithmetic. Well, that might not be so strange, according to research published in the May 8th issue of the journal Science. The report says that math and movement through space use some of the same brain circuitry.
    Researchers in France ＿＿＿＿＿＿＿＿＿＿of people who were moving their eyes right or left. Then study participants were asked to do arithmetic in their heads. And the brain scan data correctly showed ＿＿＿＿＿＿＿＿＿＿. Because adding used the same brain circuits as when eyes moved right. And subtraction matched up with ＿＿＿＿＿＿＿＿＿＿.
    Researchers say this finding shows that the development of math is too recent and advanced to have a brain region devoted solely to it. So we reuse systems that we already have. The study authors note that “throughout the history of mathematics,＿＿＿＿＿＿＿＿＿＿ .” Now we know that the connection even occurs in our brains. So I don’t feel too bad about still counting on my fingers.
    參考答案：
    scanned the neural activity in the brains
    whether the person was adding or subtracting
    the neurons firing when eyes moved left
    concepts of number and space have been tightly intertwined