问题 多选题

亚硝酸钠(NaNO2)是一种致癌物质.某兴趣小组用右图所示的装置测得某水样经过不同煮沸时间后NaNO2含量的变化如下表,则下列有关说法正确的是(  )

煮沸时间(小时)024812
NaNO2的质量分数000.014%0.028%0.056%

A.反复充分煮沸的水中,NaNO2的含量不会增大

B.在日常生活中我们不能经常饮用反复煮沸的水

C.煮沸过程中水分子与水分子相互反应生成了NaNO2

D.长时间加热后,溶于水中的某些物质发生反应生成了NaNO2

答案

BD

阅读理解

Franz Schubert was a famous musician in the world.But he lived a very hard life and often suffered(遭受)from being hungry.One day he was very hungry and went to a small restaurant,hoping he might meet some friends there.He looked around but found nobody he could borrow any money from.Then his eyes fell on a paper on one of the tables.In it was a little poem(诗歌).He read the poem.Then he wrote a piece of music for the poem and took his work to the owner of the restaurant.He only received a piece of beef and potato for it.Thirty years after his death,this manuscript(手稿)by Schubert was worth 40,000 francs.It was his famous Berceuse(《摇篮曲》).

小题1:Schubert went to the restaurant to______.

A.write a poem for his Berceuse

B.have his dinner together with his friend

C.see if he could find some friends who could lend him some money for a meal

D.write a piece of music for the owner of the restaurant小题2:We know the owner of the restaurant______from this passage.

A.was also a musician

B.was very kind

C.hated Schubert very much

D.didn’t understand music very much小题3:The passage didn’t tell us______.

A.how much his manuscript was worth.

B.how poor Schubert was

C.why Schubert wrote a piece of music for the little poem

D.whether Franz Schubert mastered the poem小题4:What’s the Chinese meaning of“famous musician”?______.

A.刻苦的音乐家

B.勤劳的指挥家

C.著名的指挥家

D.著名的音乐家小题5:The best title for this passage is______.

A.Musician and Hunger

B.Franz Schubert and His Berceuse

C.Franz Schubert Died

D.A Great Musician

单项选择题