下列各组物质中,依次是按化合物、混合物、单质组合的是( ) A.纯净的空气、铁矿

题型:选择题

问题:

下列各组物质中,依次是按化合物、混合物、单质组合的是(  )

A.纯净的空气、铁矿石、冰

B.干冰、氨气、镁带

C.冰水混合物、纯净的石油、氮气

D.氧化镁、无烟煤、医用碘酒

考点:物质的简单分类
题型:选择题

根据短文内容和首字母提示,在下文空格处填入适当的词使短文完整。(每空一词)

The Slender West Lake Scenic Spot lies in the northwestern part of Yangzhou with i小题1:   south gate facing Great Rainbow Bridge Road. It c  小题2:an area of about 123.6 hectares. The Slender West Lake was named a National Key Scenic Spot in 1988 and National AAAAA Tourist Area in 2010.

The Slender West Lake Scenic Spot u 小题3:to be a long river called the Baozhang Lake, which is 4 kilometers in length and less than 100 metres in width. A famous poet Wang Hang in the Qing Dynasty once composed a poem, from which the Slender West Lake gets its p 小题4:   name and it is famous both at home and a  小题5: . During the Sui and Tang Dynasties, many gardens were built along the Slender West Lake. A large number of buildings along the moats were built in d 小题6:  locations during different periods(时期). E  小题7: during the Qing Dynasty, many rich salt merchants(商人)s 小题8:  much money in recruiting(聘请)garden designers and building gardens upon the lake.

The Slender West Lake not only represents the beauty of n  小题9: landscape, but also embodies(体现,蕴含)the richness of its h  小题10:  and culture.

题型:选择题

韩老师在给学生讲解花的构造时,将花的挂图带到了教室,供学生研究学习。张老师采用的教学方式是()。

A.实物直观

B.模象直观

C.知识直观

D.言语直观

题型:选择题

I see four kinds of pressure working on college students today: economic pressure, parental pressure, peer pressure, but self-induced pressure.

A.and

B.or

C.nil

D.with

题型:选择题

某大学教授发表了一篇论文被杂志社收编,该论文的著作权应归( )所有。

A.教授

B.杂志社

C.国家版权局

D.教授所在大学

题型:选择题

由某些疾病或药物引起的骨质疏松属于:()

A.原发性骨质疏松

B.绝经后骨质疏松

C.老年性骨质疏松

D.继发性骨质疏松

E.特发性骨质疏松

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