[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]He was not as active as I had ______him to be.
正确答案 :D
expected
解析:解析:not as... as意为“和……不像”;recognize意为“认出”;inspect意为“检察,视察”;object是:反对(做某事)”;expect意为“期望,预期”。
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