襄阳古隆中已成为继我国洛阳、菏泽之后第三大牡丹观赏基地,面积达15亩,243个品

题型:选择题

问题:

襄阳古隆中已成为继我国洛阳、菏泽之后第三大牡丹观赏基地,面积达15亩,243个品种,一万余株,牡丹种类多样性的实质是(  )

A.生存环境的多样性

B.形态的多样性

C.基因的多样性

D.适应性的多样性

考点:生物多样性的内涵
题型:选择题

强电解质和弱电解质的本质区别在于(  )

A.强电解质易溶于水,弱电解质不溶于水

B.相同浓度时,溶液导电能力的强弱

C.电解质能否完全电离

D.是强酸强碱,还是弱酸弱碱

题型:选择题

单项选择。

— Are there any ______ on the farm?

— Yes, there are some. [ ]

A.horse

B.duck

C.chicken

D.sheep

题型:选择题

(12分)情境一:淮北市中小学开学第一天上午,交警携带《致学生家长的一封信》等宣传材料,走进小丽所在的学校,要给师生上交通安全课。

(1)小丽的正确做法是           。(2分)

(2)理由:                                                       。(2分)

情境二:"教育第一"全球倡议行动一周年纪念活动于当地时间9月25日在联合国总部举行。

(1)假如你代表中国,对"教育第一"的倡议,应该表示           。(2分)

(2)理由:                                                       。(2分)

情境三:小强的父母符合"单独两孩"的生育条件,考虑是否再生一个孩子。

(1)当父母询问小强的是否同意时,小强说           。(2分)       

(2)小强考虑到的问题可能是                                       。(2分)

题型:选择题

阅读理解。

     In Eastern Europe, blue jeans symbolize (象征) American culture and "the good life". In Spain they are

known as "cowboys". In China, jeans are known as niuzaiku, also, "cowboy trousers", which

means they are connected with the American West cowboy culture and outdoor work.

     Jeans are usually made from denim (粗布), but may also be made from other materials. The earliest

known cloth for jeans was a thick cotton cloth from the Indians. At first they were working clothes. They

became popular among teenagers in the 1950s. Today jeans are a very popular form of casual wear around

the world and come in many styles and colors.

     Jeans were first made in Genoa in Italy. The trousers were made for the Genoese navy (海军) because

they needed trousers which could be worn wet or dry, and whose legs could be easily rolled up while the

men were cleaning the ships. These jeans would be washed by pulling them in large fishing nets behind the

ship, and the sea water would make them white.

     In the 1850s Levi Strauss, a business man living in San Francisco, was selling blue jeans under the

"Levi's" name to the coal workers of California.

      During World War II, the coal workers liked jeans very much because they were strong and did not tear

easily. In the 1950s, jeans became popular with young people in the United States. Wearing of blue jeans by

teenagers was the symbol of rebels (反叛者) in TV programmes and movies. Some cinemas and restaurants

refused to let people in if they wore blue jeans. In the 1980s, jeans finally became high fashion clothing, when

famous designers started making their own styles of jeans, with their own labels on them. Sales of jeans went

up and up.

1. From the first paragraph we know that _____. [ ]

A. cowboy culture is usually related to the West of America

B. cowboys wear jeans only

C. cowboys live a good life

D. American culture is cowboy culture

2. Jeans were first made in _____. [ ]

A. America

B. Italy

C. Spain

D. China

3. From Paragraph 4 we know that "Levi's" was _____. [ ]

A. the name of a worker

B. the brand (名牌) of a kind of jeans

C. the name of a kind of cloth

D. the nickname of a businessman

4. Why the people who wore blue jeans were refused to go into the cinema in the 1950s? [ ]

A. Because jeans were made for workers.

B. Because jeans were made of denim.

C. Because wearing jeans was the symbol of rebels.

D. Because it was during the time of war.

题型:选择题

叉车上主要使用的硅整流交流发电机与直流发电机相比,其具有的优点是()时,发电能力强一倍以上。

A.质量不同

B.质量相同

C.数量相同

D.数量不同

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