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【简答题】
肖特基缺陷是指 。
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举一反三
【简答题】如图所示，已知M是平行四边形ABCD的AB边的中点，CM交BD于点E，BD=3BE，则图中阴影部分面积与平行四边形ABCD面积之比为______．
【简答题】What do Chinese college graduates have in common with ants? The recent Ants Tribe about the lifeof some young people flock (聚集) to Beijing after university, describes the gradua...
【简答题】已知：如图所示，平行四边形ABCD的对角线AC的垂直平分线与AD、BC分别交E、F。 求证：四边形AFCE是菱形。
【单选题】The author fears that children will grow up into adults while being ______.
A.
too independent of others
B.
too critical of themselves
C.
incapable to think for themselves
D.
incapable to use basic skills
【单选题】Which of the following statements is NOT true of ants?
A.
Ants know very soon that another ant is dead．
B.
When an ant is dead，others move its body out of the nest．
C.
If an ant is unconscious，it is moved out of the nest．
D.
Living ants have the“I'm dead”chemical on their bodies．
【单选题】_________ ants grow, they change their forms three times.
A.
Before
B.
As soon as
C.
While
D.
Until
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