分析 這篇文章的主題是來自記憶的數(shù)學.在這份研究中孩子們把計算器放在一邊,是因為他們能回憶起基礎的數(shù)學事實,通過混合乘法表順序的訓練有助于把數(shù)學學得更好.學家希望利用這項研究開發(fā)幫助各級孩子學習數(shù)學的新策略.混合乘法表順序的訓練保持大腦活躍,保持這些訓練,你可能會立刻成為一個數(shù)學天才.
解答 答案:52.C 細節(jié)理解題.根據(jù)第二段第二行The quicker kids can recall basic math facts,the easier it is for them to solve more difficult math problems.和After a certain amount of time spent practicing math,kids can put away the calculator(計算器).孩子們可以回憶起基本的數(shù)學事實,越快越容易解決更困難的數(shù)學問題.和一定的時間練習數(shù)學之后,孩子們可以把計算器拋棄.可知在這份研究中孩子們把計算器放在一邊是因為他們能回憶起基礎的數(shù)學事實,故選C.
53.D 猜測詞義題.根據(jù)第四段第二句Rather than using their fingers to count,or scrawling out equations(列算式)on a piece of paper,the students pulled the answers from memory.而不是使用他們的手指計數(shù),或草草把方程寫在一張紙上,學生把答案儲存.可知第四段中"fact retrieval"的過程意思是按照他們所記憶的解決問題,故選D.
54.C 細節(jié)推理題.故據(jù)最后一行Mixing up the order keeps the brain active.Keep these trainings up,and you may be a math whiz in no time.混合乘法表順序的訓練保持大腦活躍,保持這些訓練,你可能會立刻成為一個數(shù)學天才.可知從這份研究中我們知道通過混合乘法表順序的訓練有助于把數(shù)學學得更好.故選C.
55.A 主旨歸納題.根據(jù)整篇文章內(nèi)容及其開頭All the time you spent memorizing multiplication tables(乘法表)may have made you a better mathematician,according to a new study.A team of scientists from Stanford University,in California,have shown how the brain reorganizes itself as kids learn math.你花費所有的時間背乘法表會讓你更好成為數(shù)學家,根據(jù)一項新的研究.在加利福尼亞的一個科學家團隊,從斯坦福大學,顯示大腦如何進行自我重組作為孩子學習數(shù)學.可知這篇文章的最佳題目是來自記憶的數(shù)學.故選A.
點評 本文中長句較多,一時很難讀懂句子含義,注意多讀幾遍,不要強求非得理解一詞一句的含義,能把握文章大意就行.瞻前顧后,仔細推敲,確定最佳答案.
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