有关氢原子光谱的说法中不正确的是( ) A.氢原子的发射光谱是连续光谱 B.氢原

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问题:

有关氢原子光谱的说法中不正确的是(  )

A.氢原子的发射光谱是连续光谱

B.氢原子光谱的频率与氢原子能级的能量差有关

C.氢原子光谱说明氢原子能级是分立的

D.氢原子光谱说明氢原子只发出特定频率的光

考点:电磁波谱
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产业技术政策的中心内容是()。

A.影响和促进产业的技术进步

B.加大产业的技术投入

C.大力引进技术人才

D.积极引进先进技术

题型:选择题

Boys' schools are the perfect place to teach young men to express their emotions and involve them in activities such as art, dance and music.

Far from the traditional image of a culture of aggressive masculinity (阳刚), the absence of girls gives boys the chance to develop without pressure to obey a stereotype (陈规旧俗), a US study says.

Boys at single-sex schools were said to be more likely to get involved in cultural and artistic activities that helped develop their emotional expressiveness, rather than feeling they had to obey the "boy code" of hiding their emotions to be a "real man".

The findings of the study go against received wisdom that boys do better when taught alongside girls.

Tony Little, headmaster of Eton, warned that boys were being failed by the British education system because it had become too focused on girls.He criticized teachers for failing to recognize that boys are actually more emotional than girls.

The research argued that boys often perform badly in mixed schools because they become discouraged when their female peers do better earlier in speaking and reading skills.

But in single-sex schools teachers can tailor lessons to boys' learning style, letting them move around the classroom and getting them to compete in teams to prevent boredom, wrote the study's author, Abigail James, of the University of Virginia.

Teachers could encourage boys to enjoy reading and writing with "boy-focused" approaches such as themes and characters that appeal to them.Because boys generally have more acute vision learn best through touch, an are physically more active, they need to be given "hands-on" lessons where they are allowed to walk around; "Boys in mixed schools view classical music as feminine (女性的) and prefer the modem type in which violence and sexism are major themes, "James wrote.

Single-sex education also made it less likely that boys would feel they had to obey a stereotype that men should be "masterful and in charge" in relationships."In mixed schools boys feel forced to act like men before they understand themselves well enough to know what that means," the study reported.

小题1:The author believes that a single-sex school would ____.

A.force boys to hide their emotions to be "real men"

B.encourage boys to express their emotions more freely

C.help to cultivate masculine aggressiveness in boys

D.naturally reinforce in boys the traditional image of a man小题2:It is commonly believed that in a mixed school boys ____.

A.perform relatively better

B.grow up more healthily

C.behave more responsibly

D.receive a better education小题3:What docs Tony Little say about the British education system?

A.It fails more boys than girls academically.

B.It focuses more on mixed school education.

C.it fails to give boys the attention they need.

D.It places more pressure on boys than on girls.小题4:According to Abigail James, one of the advantages of single-sex schools is ____.

A.teaching can be tailored to suit the characteristics of boys

B.boys can focus on their lessons without being distracted

C.boys can choose to learn whatever they are interested in

D.teaching can be designed to promote boys' team spirit小题5:Which of the following is characteristic of boys according to Abigail James' report?

A.They enjoy being in charge.

B.They obey stereotypes.

C.They are violent and sexist.

D.They have sharper vision.

题型:选择题

泊、水库采样断面垂线的布设:可在湖(库)区的不同水域(如进水区、()、()、()、岸边区),按水体类别设置监测垂线。

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某城镇设计供水量为24万m3/d,采用2个侧面进水的箱式取水头,从无冰絮的河流取水至吸水井,进水孔上安装格栅,栅条采用10mm厚扁钢,栅条净距为100mm。若水厂自用水量、原水输水管漏失水量及市区配水管网漏失水量分别占设计水量的8%、5%和10%,则每个取水头的进水孔总面积最小应为()m2

A.7.68

B.4.18

C.3.84

D.2.30

题型:选择题

当你的眼睛出现问题时,会对哪些方面产生影响?()

A、影响形象

B、影响生活

C、影响发展

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