如图中的①、②是氟元素、钙元素在元素周期表中的信息,A、B、C、D是四种粒子的结

题型:填空题

问题:

如图中的①、②是氟元素、钙元素在元素周期表中的信息,A、B、C、D是四种粒子的结构示意图.请你回答:

(1)钙元素的相对原子质量为 ________ ,氟元素属于第 _______ 周期的元素;

(2)X= ________

(3)A、B、C、D属于同种元素的粒子是 ____________ (填序号);

(4)A粒子的化学性质与B、C、D中哪一种粒子的化学性质相似__________(填序号).

考点:元素周期表原子结构示意图离子结构示意图
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地球的表面积为5.1亿平方千米,其中,海洋面积约为陆地面积的2.4倍.地球上的海洋面积和陆地面积分别是多少亿平方千米?

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女性,61岁。心尖区听到舒张期隆隆样杂音,应考虑为()

A.功能性杂音

B.二尖瓣狭窄

C.二尖瓣关闭不全

D.主动脉瓣狭窄

E.肺动脉瓣狭窄

题型:填空题

阅读理解。

      As a boy growing up on a farm near the Caribbean coast of Colombia(哥伦比亚), Alvaro

Cogollo loved both plants and vallenato, the traditional music of the region.As a biology student

in the 1970s, Cogollo traveled around the country to document its rich botanical heritage and,

informally, studied the music that tells an important story of Colombia.

     "We were colonized by the Spanish; later, Africans were brought as slaves to exploit gold

mines; and the native peoples were already here," he says."That is what authentic vallenato

represents with its three instruments: the accordion(手风琴), from a European origin; la caja drum,

which is of African origin; and la guacharaca, a beating instrument made from a palm tree, which is

from native American origin."

     Over the course of his nearly four-decade career, Cogollo has discovered more than 150 new

species of plants, 17 of which bear his name.Although Cogollo never earned a PhD, his colleagues

say he's made invaluable contributions to knowledge of Colombia's plant at a time when deforestation

(砍伐森林) is a big threat to the country' s biodiversity.Governments have focused on trying to move

 the country out of poverty and conflict through exploiting its natural resources, not through scientific

resource development.But Cogollo sees things a different way.By educating the public about alternative

uses for the land, and researching plants' potential uses-including as medicines, foods, and bio-fuels-

Golombia could improve its economy and quality of life without neglecting conservation, Cogollo says.

     Cogollo's other major achievement has been the transformation of a neglected botanical garden in a

Medellm neighborhood into a well-known center for research, environmental education, and community

gatherings.What had been a club for wealthy orchid enthusiasts now offers free admission and attracts

rich and poor alike.The success of the botanical garden has in turn contributed to the transformation

of Medellm.Once seriously damaged, by violent wars between armed groups, the city has had some

improvements that include better public safety, tougher pollution controls and the creation of green

spaces.

     What Cogollo has focused his latest efforts on is teaching Colombians from all social classes and

backgrounds about the importance of biodiversity and conservation through a shared musical heritage.

"The fact that Alvaro's been able to give talks to audiences filled with all kinds of people is very

important, and that's what happened in Medellm the first time he talked about vallenato music,"

Dr.Forcro says."People sitting there had no idea of environmental conservation, and then they did."

1. What's the main feature of vallenato music?

A. It records the history of Colombia.

B. It sounds like the voice of plants.

C. It plays with local instruments.

D. It has origins from all over the world.

2. While protecting the environment, Cogollo attached importance to ___.

A. the research of music

B. the protection of plants

C. the improvement of people's life

D. the communication with different people

3. The purpose of rebuilding the botanical garden is ____.

A. to raise the public's environmental consciousness

B. to set up a club for rich orchid enthusiasts

C. to give talks about vallenato music

D. to create a fair economic system

4. People from different backgrounds came to Cogollo's reports about biodiversity mainly because

of      .

A. their common interest in Vallenato music

B. their improved environmental consciousness

C. his popularity in environmental protection

D. his previous achievements in the city development

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在融资租赁合同中,出租人和承租人对租赁期间届满租赁物的归属没有约定或者约定不明确,依照《合同法》有关规定仍不能确定的,租赁物的所有权归承租人。 ( )

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引诱、教唆、欺骗他人吸毒罪及其犯罪构成是什么?

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