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【单选题】
科学家在非洲发现的制作颜料的作坊,距今已有()的时间。
A.
5万年
B.
8万年
C.
10万年
D.
12万年
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参考答案:
举一反三
【单选题】Young children are often advised not to spoil their appetite by eating sweets ________ the three meals. [      ]
A.
among
B.
during
C.
between
D.
through
【单选题】用于前列腺癌初筛的首选肿瘤标志物是
A.
AFP
B.
PSA
C.
CEA
D.
CAl99
E.
HCG
【简答题】根据短文内容和首字母提示,补全文中单词.。 All a __ 1 __ the world, people drink tea. But tea doesn't mean the same thing to everyone. In different countries people have very d__ 2 __ ideas about drinking tea. In China, f...
【单选题】用于前列腺癌初筛的首选肿瘤标志物是
A.
AFP
B.
PSA
C.
CEA
D.
CA19-9
E.
HCG
【简答题】Tea, coffee and cocoa are three major drinks all over the world. Tea is drunk by the largest number of people in the world. Tea, as well as silk and porcelain, began to be known by the world over a th...
【单选题】有关周皮的描述,错误的是( )。
A.
周皮是次生保护组织
B.
周皮是在茎的初生结构上形成
C.
周皮包括木栓层、木栓形成层和栓内层
D.
皮孔是周皮上的通气结构
【单选题】用于前列腺癌初筛的首选肿瘤标志物是
A.
AFP
B.
PSA
C.
CEA
D.
CA19-9
【单选题】用于前列腺癌初筛的首选肿瘤标志物是
A.
PSA
B.
CEA
C.
CA19-9
D.
AFP
【简答题】阅读理解。 Tea, coffee and cocoa are three major drinks all over the world. Tea is drunk by the largest number of people in the world. Tea, as well as silk and porcelain, began to be known by the world ove...
【简答题】A)The area covered by the course. B)The practice orientation of the course. C)Teachers’ attitude to both teaching and the student. D)Teachers’ flexibility in teaching.
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