[单选题]Science is still ______ of the causes of many kinds of cancer.
正确答案 :A
ignorant
解析:解析:ignorant可以指“无学识的,愚昧的”,还指“不知道的”;unconscious意为“失去知觉的,不省人事的;无意识的”;conscious意为“有知觉的,意识到的”;informed意为“获悉,告知”。
[单选题]Mrs. White's husband tried to ______.
正确答案 :C
stop her from buying unnecessary things
解析:解析:注意题干上的名词:Her husband在文章中出现的地方,从而可以很容易地找到本题地依据句“Her husband tried again and again to persuade her to give it up,but she just wouldn't listen.”本句话的主要意思为丈夫不让她为了中奖而购买不必要的东西,并不是不让她去商场。所以B选项错误;A和D选项内容在文中没有出现,属于无关信息。
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