先化简,再求值:[(2x-y)2+(y+2x)(y-2x)-2y(4x-y)]÷

题型:解答题

问题:

先化简,再求值:[(2x-y)2+(y+2x)(y-2x)-2y(4x-y)]÷4y,其中x=
1
3
,y=2.
考点:整式的加减乘除混合运算
题型:解答题

短文填空。根据短文内容填写所缺单词,每空填一词。

     A wolf went to a   1  . It   2   some of the farmer's sheep. The farmer was so   3  . He wanted to kill it

with his gun(枪). But the wolf ran away.

     The wolf met Mr. Bell   4   its way. It asked Mr. Bell   5   help.   6   Mr. Bell was very kind, he   7  

to help it. He hid (藏起来) it in his bag. The wolf   8   jump out of the bag until the farmer left. After Mr.

Bell let it   9  , the wolf wanted to eat him.

     At this time, a hunter (猎人) came. He killed the wolf and   10   Mr. Bell.

题型:解答题

如图所示,是大热天公路上出现的海市蜃楼,它产生的原因是(  )

A.光的直线传播

B.光的反射

C.光的析射

D.光的“三基色“

题型:解答题

肩关节周围炎和冈上肌腱炎活动受限情况共同的为()

A.外展受限

B.内收、内旋受限

C.前屈、外旋受限

D.后伸、内旋受限

E.被动活动受限

题型:解答题

两个以上个人商用房借款人共同申请借款的,共同借款人限于()。

A.配偶、子女

B.父母、配偶

C.父母、子女

D.配偶、子女、父母

题型:解答题

某化合物结构如图所示。

该物质的主要生物活性是()

A.平喘

B.镇痛

C.抗菌消炎

D.松弛平滑肌

E.解有机磷中毒

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