问题 选择题

取一支大试管,通过排饱和食盐水的方法先后收集半试管甲烷和半试管氯气,用铁架台固定好.放在光亮处一段时间.下列对观察到的现象的描述及说明正确的是(  )

A.试管中气体颜色变浅,是因为发生了加成反应

B.试管中有少量白雾生成,这是氯化氢与水蒸气形成的盐酸小液滴

C.试管内壁出现油状液体,这是甲烷与氯气的混合溶液

D.试管内甲烷和氯气恰好完全反应,全部生成CH3Cl小液滴

答案

答案:B

阅读理解

Father’s Day is the third Sunday in June. It is a day to thank fathers. On that day, fathers usually receive greeting gifts and cards. On the cards, children will write, “Thanks, father.” “Best wishes for Father’s Day” and so on. Father’s Day is also a day families get together at home as well as in the restaurants.

Where does the idea for the holiday come from? We should thank an American. In 1909 she wrote letters to some important persons. In her letter she advised to make Father’s Day on the third Sunday in June. In June in 1910, people celebrated(庆祝) the first Father’s Day in Washington. People whose parents are dead often decorated(装饰) their graves(坟墓) with flowers on these days. These are days of family fun and creating good feelings and memories(记忆,回忆).

小题1:When is Father’s Day?                     

A. The second Sunday in May.   

B. The third Sunday in June.

C. The third Saturday in June.    

小题2:On Father’s Day           usually receive gifts and cards.

A. fathers   B. mothers    C. father

小题3:Where does the idea for the holiday come from?             

A. China.   B. England.    C. America.   

小题4:When did the people celebrate the first Father’s Day?           

A. In June in 1900.            B. In July in 1910.       C. In June in 1910.

小题5:Which sentence is not TRUE?               

A. On the cards, children will write “Thanks father.”

B. Father’s Day is also a day students get together at school.

C. In 1909 an American wrote letters to some important persons.

单项选择题