下列各项所述的数字不是6的是( ) A.在NaCI晶体中,与一个Na+最近的且距

题型:选择题

问题:

下列各项所述的数字不是6的是(  )

A.在NaCI晶体中,与一个Na+最近的且距离相等的CI-的个数

B.在金刚石晶体中,最小的环上的碳原子个数

C.在二氧化硅晶体中,最小的环上的原子个数

D.在石墨晶体的片层结构中,最小的环上的碳原子个数

考点:晶胞
题型:选择题

One day an Australian farmer,Joe,saw a bright light in the sky. The light came nearer and nearer and suddenly Joe realized that it was a spaceship. The spaceship landed in a field nearby.

The door of the spaceship opened and two strange beings(怪物)climbed out. They seemed to be half man and half bird. Joe was afraid of them. He tried to run away. But the spacemen walked towards him,picked him up and carried him into the spaceship.They put wires(导线)from a machine onto his head  and they they began to speak to him in English.

They asked him questions about earth.“We’ re from Venus(金星),”they said,“But it is getting very hot there. A lot of our people are dying and we have not much time left. We are trying to find a new home.”

After some time they freed Joe and at last the spaceship took off and disappeared. Joe told his friends about the spacemen,but no one believed his story.

“You wi ll believe me one day,”Joe told them.“The spacemen will come back again.”

根据短文内容,选择最佳答案。

小题1:What’s the bright light in the sky?

A.A bird

B.A plane

C.A rocket

D.A spaceship小题2:What are the strange beings like?

A.Men

B.Birds

C.Neither men nor birds

D.Half man and half bird小题3:What did the strange beings want Joe to do?

A.Put wires from a machine onto his head

B.Speak to them in English

C.Answer some questions about the earth

D.Find a new home小题4:Why did the aliens come to the earth?

A.To find a new home

B.To speak to Joe

C.To destroy the earth

D.To take Joe away小题5:According to the passage,which sentence is RIGHT?

A.The aliens took away Joe

B.It is getting very cold on Venus

C.A lot of people on Venus are dying

D.Not all the people believed Joe

题型:选择题

民富的重要举措就是支持以民营经济为主的中小企业发展。漫画表明

A.鼓励、支持非公有制经济的发展

B.中小企业没有政府支持只能死路一条

C.是对国有大中型企业的不公平对待

D.政府有意让民营经济成为国民经济的主导

题型:选择题

承包人应按合同约定对( )进行全过程的质量检查和检验,并作详细记录,编制工程质量报表,报送监理人审查。

A.工程的所有部位

B.材料

C.施工工艺

D.施工流程

E.工程设备

题型:选择题

i5T1.4床身采用什么铸造工艺?

题型:选择题

2013年,新一届政府在全国人大会上“约法三章”,承诺“三公经费”只减不增。“三公”经费指:()

A.公务用车费

B.公务接待费

C.因公出国(境)费

D.会议经费

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