化简,求值:(a2-b2)÷(a+b)+(a2-2ab+b2)÷(a-b),其中

题型:解答题

问题:

化简,求值:(a2-b2)÷(a+b)+(a2-2ab+b2)÷(a-b),其中a=
1
2
,b=-2.
考点:整式的加减乘除混合运算
题型:解答题

前厅部的服务工作是围绕着这中心展开的,也是整个饭店服务工作的组成部分()。

A.以客人为中心

B.客房销售

C.维护饭店形象

D.饭店价值最大比

题型:解答题

校园暴力会给受害者带来什么危害?

________________________________________________________________________________

题型:解答题

Mike Myers is a teacher at Chauncey Rose High School in Terre Haute, Indiana.  Last year, he taught his students about the world’s rain forests.  They learned that rain forests are important because the plants and animals of the rain forest give us food, wood, and medicine.

Destruction of the world’s rain forests is a serious problem.  Unluckily, rain forests are disappearing at a rate of 80 acres per minute!  As part of a class project, Myers’ students bought three acres of rain forest in Central America.  They paid $25 per acre.  The students hope that the land they bought will be protected and not destroyed. The students became so interested in rain forests that they decided to get a closer look at a real rain forest.

So last June, Myers and four of his students took a boat ride down a river.  They saw alligators and crocodiles.  In the middle of the week, a guide took Myers and his students into the rain forest.  “The monkeys were not happy that we were in their forest.  They broke small branches off the trees and threw them at e us,” one of the students said, “It was a great learning experience for all of us,” said Myers.

Each student chose something specific about Costa Rica to study involving the plants, animals, food, and culture.  During the last few days the group had time to do fun activities.  They went whitewater rafting and horseback riding, and visited Costa Rica’s active volcano.

Myers hopes to make the trip every year with a different group of kids.

小题1:How much did Myers’ students pay for the rain forest they bought?

A.$25

B.$75

C.$80

D.$2000小题2:What did Myers and his students do at the beginning of the trip?

A.They went into the rain forest.

B.They bought acres of rain forest.

C.They took a boat ride down a river.

D.They visited Costa Rica’s active volcano.小题3:The word “Destruction” in paragraph 2 probably means “the process of being ______.”

A.destroyed

B.developed

C.described

D.discovered.小题4: When the monkeys saw Myers and his students, they ___________.

A.felt excited

B.felt angry

C.jumped off the trees

D.left the rain forest小题5:The passage mainly shows that Myers and his students __________.

A.did something to protect rain forest

B.wanted to buy the rain forest in Costa Rica

C.were interested in the culture of Costa Rica

D.went to the rain forest for various fun activities

题型:解答题

下列有关商业银行的叙述,哪项不符合我国《商业银行法》的规定( )

A.商业银行变更名称,应当经中国人民银行批准

B.商业银行及其分支机构自取得营业执照之日起无正当理由超过三个月未开业的,由中国人民银行吊销其经营许可证,并予以公告

C.商业银行开业后自行停业连续六个月以上的,由中国人民银行吊销其经营许可证

D.商业银行的分立、合并,应当经中国人民银行审查批准

题型:解答题

国际工程中的业务费包括()。

A.工程保险费

B.广告宣传费

C.办公费

D.法律顾问费

E.咨询费

更多题库