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【简答题】
完成下面的证明推理过程，并在括号里填上根据．如图，已知∠1= ∠2 ，∠A= ∠F ， 求证：∠C= ∠D. 证明：因为∠1=∠2（已知），∠1=∠3（对顶角相等） 所以∠2=∠____( ) 所以BD∥____( ) 所以∠FEM=∠D，∠4=∠C( ) 又因为∠A=∠F(已知) 所以AC∥DF( ) 所以∠C=∠FEM( ) 又因为∠FEM=∠D(已证) 所以∠C=∠D(等量代换)
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举一反三
【单选题】According to the author, the reason why we go wrong about our friends is that ______.
A.
we fail to listen carefully when they talk
B.
people tend to be annoyed when we check what they say
C.
people usually state one thing but mean another
D.
we tend to doubt what our friends say
【单选题】关于脊神经的描述，正确的是
A.
共有28对
B.
除胸神经外，其余各对脊神经分别交织成丛分布
C.
后支仅含躯体感觉纤维
D.
前支是含有四种成分的混合性神经
E.
有分支支配喉肌
【单选题】According to the author, the reason why we go wrong about our friends is that ______.
A.
we fall to listen carefully when they talk
B.
people tend to be annoyed when we cheek what they say
C.
people usually state one thing hut means another
D.
we tend to doubt what our friends say
【简答题】The reason, why we are touched by the sound of music is that we human beings have___________.
【简答题】简述地下害虫的综合防治措施。
【单选题】The reason _____ we don't like him is _____ he often lines. [ ]
A.
that; why
B.
why; that
C.
why; because
D.
that; because
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