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【判断题】
组织是指用肉眼可直接观察的、或用放大镜。显微镜能观察分辨的材料内部围观形貌图像。A.
正确
B.
错误
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【简答题】Range At present，there are five network firms---China Telecom，China Unicom，Jitong Communications，China Netcom and China Mobile---that are allowed to operate IP services in China．Each company has its a...
【简答题】At present the number of bone marrow donors in mainland China is___________
【单选题】As China is such a populous country, the present concern for most people is still ______.
A.
starches
B.
substance
C.
sustenance
D.
substitute
【单选题】At present, the largest and most advanced oil depot in China is the Nansha oil depot.
A.
Y
B.
N
C.
NG
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