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【简答题】
简述竞争机制的含义及其作用。
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举一反三
【简答题】The heart is an important organ of circulation _________ function is to pump blood to all parts of the body. A) which B) whose C) of it D) its
【简答题】从相册选择图片,或者拍照使用的API是()
【简答题】If a diver suces too quickly, he may suffer the bends. Nitrogen (氮) dissolved (溶解) in his blood is suddenly liberated by the reduction of pressure. The consequence, if the bubbles (气泡) accumulate i...
【单选题】听力原文：As I walked into this old haunted house, I heard this terrible scream and my blood ran cold when I saw this figure in white rushing straight at me. What does the speaker mean?
A.
He was nearly killed by someone.
B.
He saw a ghost in the house.
C.
He was scared out of his wits.
D.
He saw a man rushing at him.
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