人体的密度跟水的密度差不多。小雨同学身体质量为50kg,试估算他身体的体积。

题型:计算题

问题:

人体的密度跟水的密度差不多。小雨同学身体质量为50kg,试估算他身体的体积。

考点:密度及其特性
题型:计算题

阅读理解

     Mr Green is from England. He and his wife(妻子)are teachers. They teach English in Beijing.

They have a boy and a girl. They are Jack and Mary. Jack is a student, but Mary is not . She is only

four.They  have two bikes. One is big, and the other is small. The big one is for Jack. The small one is for Mary.  On Sundays, sometimes they are at home, sometimes they go to the park. The Greens like China. They have a lot of Chinese friends

1. Where are the Greens now? They are in _____.  

A. China

B. America

C. England  

D. Japan

2. What do Mr and Mrs Green do? They _____.

A. study Chinese    

B. teach English  

C. look after Jack and Mary  

D. go to the park

3. What do Jack and Mary have? They have _____.  

A. cars  

B. watches  

C. clocks  

D. bikes

4. On Sundays, they are sometimes  _____.

A. at school

B. in the classroom

C. at home

D. on the bike

5. Mr and Mrs Green _____.

A. have many Japanese friends  

B. like China very much

C. look the same  

D. don’t know Chinese

题型:计算题

下列句中的成语使用正确的一项是  (  )

A.我那位好朋友丽丽小毛病不断,大毛病不见,真让人痛心疾首。

B.班长义正辞言地宣布,谁再随意旷课迟到,将严惩不贷。

C.追求知识,追求真理,就是要欲壑难填。

D.上级每次派人来检查工作,他都能以假乱真,应付起来左右逢源,工人都说他足智多谋。

题型:计算题

伸直型肱骨髁上骨折常见的并发症是

A.骨不愈合

B.局部感染

C.血管神经损伤

D.脂肪栓塞

E.创伤性休克

题型:计算题

下列有关实验操作错误的是(  )

A.用药匙取用粉末状固体

B.用胶头滴管滴加少量液体

C.将蒸馏水注入浓硫酸中配制稀硫酸溶液

D.倾倒液体时试剂瓶标签向手心

题型:计算题

燃烧的条件及现象是()

A.与氧气接触,温度达到着火点,发光,放热;

B.与空气接触,温度达到着火点,发光,放热;

C.与强氧化剂接触,温度达到着火点,发光,放热;

D.与强还原剂接触,温度达到着火点,发光,放热。

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