小明同学身高1.65m,他站在竖直放置的平面镜前2 m处,他在镜中的像高为m,像

题型:填空题

问题:

小明同学身高1.65m,他站在竖直放置的平面镜前2 m处,他在镜中的像高为       m,像与他相距  m。

考点:光的色散,色光的混合,物体的颜色平面镜成像的特点和原因
题型:填空题

对于平面α,β,γ和直线a,b,m,n,下列命题中真命题是(  )

A.若a⊥m,a⊥n,m⊂α,n⊂α,则a⊥α

B.若αβ,α∩γ=a,β∩γ=b则ab

C.若ab,b⊂α,则aα

D.若a⊂β,b⊂β,aα,bα,则βα

题型:填空题

阅读理解。

    Mr King lived with six hundred wild animals on the Greek Island of Kyklos. Ever since he left school, he

had traveled all over the world collecting animals for his own zoo. He hoped to collect two examples of every

kind of animal on his island. But he was afraid that people would find him someday.

    He wrote books about his travels and about his animals that he collected. The money from the books helped

to pay for all the food that these animals ate. 

    One day, when Mr King was out looking for drinking water, her found oil. He needed money for his travels

and for his zoo, and a little oil would buy enough water for what he needed all his life, but he knew what if he

told anyone else about it, it would be the end if his zoo and his life's work. So he decided not to tell anyone else

about what he had found, because oil and water couldn't mix.

1. Mr King traveled all over the world for collecting _____. [ ]

A. oil

B. water

C. animals

D. money

2. Mr king was afraid that people would find him someday because _____. [ ]

A. he hadn't got enough money for them

B. that would be the end of his zoo

C. he hadn't got enough water and oil

D. they would buy his animals

3. Mr King wrote books to _____. [ ]

A. tell people about his story

B. tell people how to find oil

C. get enough money for his animals

D. make money for his travels

4. In the passage, "oil and water couldn't mix" means that "_____". [ ]

A. Mr King needed not only water but also oil

B. oil and water were rather difficult to be mixed together

C. Mr King's animals only needed water, not oil

D. if be told the others he found oil, his life's work would be stopped

题型:填空题

影响资本主义绝对地租的因素有()

A、农产品的价值与生产价格之间的差额 

B、农业资本有机构成的相对水平 

C、农业投资的总量 

D、农产品流通 

E、农产品产量

题型:填空题

《排污费资金收缴使用管理办法》规定,各省、自治区、直辖市财政、环境保护行政主管部门应当在每季度终了后的( )内,将本行政区域内排污费资金收缴情况书面上报国务院财政、环境保护行政主管部门。

A.10日
B.20日
C.30日
D.60日

题型:填空题

在美国现代教师职业道德发展初期,一些学者使用()的研究方法,系统的分析教师的品质人格,并概括了25项教师职业应有的品质。()

A、理论;

B、实证;

C、调查;

D、对比

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