当x=-3时,代数式x2+ax+7的值为37,求当x=2时,代数式x2-ax+7

题型:解答题

问题:

当x=-3时,代数式x2+ax+7的值为37,求当x=2时,代数式x2-ax+7的值.

考点:代数式的求值
题型:解答题

销售商品一批,价格为20000元,增值税3400元,收到购货方支付的银行汇票解交银行,应编制( )。

A.现金收款凭证
B.银行存款收款凭证
C.现金付款凭证
D.转账凭证

题型:解答题

常用于调节凡士林基质稠度的是

A.羊毛脂

B.蜂蜡

C.液状石蜡

D.丙二醇

E.二甲硅油

题型:解答题

Due to the increasing number of violence acts produced in schools all over the world, more and more parents prefer to have their children educated at home rather than at school. This way they can assure their safety and well-being,although teachers and school representatives are trying to improve the situation in schools by increasing the number of the persons in charge of the safety of the students.

The main reason for violence acts are the films and cartoons that fill the children’s time.They want to do everything.they watch on TV and never think at the consequences,and they may hurt a classmate or a teacher.

On the other hand, parents are not fully satisfied with the children’s results obtained in classes and they consider private classes would have better results.

When a teacher has to watch 30 students in class he can’t probably see what each of them is doing,how he is writing,or if he understands the explanations.At home the teacher can explain in details everything the child doesn’t understand as many times as he considers proper.

And many times,the child grows fond of the teacher at home,who becomes his best friend,and who helps him whenever he needs someone to talk to.    

However, the best solution would be a mixture between the education received at school and that at home,because school makes children communicate and socialize.Keeping a child at home for fear that there might be something bad happening to him only makes the child’s character weak and prevents him from knowing what real life is.Staying in a crystal ball only does harm to the child.

All in all,schools have been created to help children,not to harm them,so it’s best to keep children in these special places,where they learn,laugh,have fun and make new friends.

53.The writer’s purpose in writing the text is to          .

A.teach parents the ways to keep theft children safe

B.show solutions to developing children’s character

C.explain the main reason for violence acts in schools

D.analyze an education problem and give opinions

54.Which of the following might be the best title of the passage?

A.Advantages and Disadvantages of Private Classes

B.Who is to Blame.Parents or Schools?   

C.which is Better, School Study or Home Study  

D.The Relationship between Teachers and Children   

55.Parents prefer to have their children educated at home because the following EXCEPT that            

A.More and more violence acts occur in schools   

B.Parents want to improve their Children's grades   

C.Parents are concerned about their children’s safety

D.The education system is far from satisfactory   

56. We can infer from the passage that          .

A.violence TV programs have bad effects on children’s behavior

B.the teacher at home is more patient than the teacher at school

C.children today are weak from lack of sense of right and wrong

D.there ale too many students in class for a teacher to teach

题型:解答题

“三有一化”具体的内容是()。

A.有组织、有纪律、有场地,构建区域化大党建新格局

B.有管理制度、有纪律约束、有党员奉献,构建城市基层区域化党建格局

C.有人管事、有钱办事、有场所议事,构建城市基层区域化党建格局

D.有制度、有资金、有场地,构建城市基层区域化党建格局

题型:解答题

关于胺碘酮的叙述,哪些是对的()。

A.是最长的抗心律失常药

B.治疗量不影响心率

C.对室性心律失常无效

D.延长动作电位时程

E.降低膜反应性

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