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【单选题】
已知向量 a = 5i + 7i + 2k, 在 x 轴上的投影及在 y 轴上的分向量.A.
7
B.
2
C.
5
D.
6
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【单选题】How to Love the World As It Is? It struck me recently that a lot of people think they know what's wrong with this world, and it also struck me that they're all wrong. Seriously-almost every political ...
A.
The world is in a mess.
B.
Humans don't know what's wrong with the world.
C.
The world is promising.
D.
Humans can't get adjusted to the changing world.
【单选题】Then the truth struck me / is confirmed by myself . He was blind.
A.
struck me
B.
is confirmed by myself
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【简答题】words that is nice and warm. Still, your happiness makes 81. ____________
【简答题】How did men first learn to invent words? It is still unknown to people; in other words, the origin* of language is a mystery. All we suppose is that some early men invented certain sounds, in one way ...
【简答题】下列属于质量管理体系特性的是（ ）。
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【简答题】The words of his old teacher left a ________ impression on his mind. He is still influenced by them. A) staying not B) not to stay C) that he would not stay D) that he not stay
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