题目
（07年江苏卷）20.（10分）下图中各物质均由常见元素（原子序数≤20）组成。已知A、B、K为单质，且在常温下A和K为气体，B为固体。D为常见的无色液体。I是一种常用的化肥，在其水溶液中滴加AgNO3溶液有不溶于稀HNO3的白色沉淀产生。J是一种实验室常用的干燥剂。它们的相互转化关系如右图所示(图中反应条件未列出)。 请回答下列问题：（1）I的化学式为_____ ；J的电子式为 ____ ；（2）反应①的化学方程式为_______ ；（3）F的水溶液与21、Looking forward to the weekend? You are not alone in
the world．People in the UK also get excited about ．he weekend，as it is a time to go out and
catch up with family and friends．
Saturday morning is sports time!
For boys，football is the
usual choice，while girls often go to dance or fitness（健康） classes．On Saturday afternoon，the shopping malls get busy．Young people
hang out，looking at clothes，music
or video games．Older people like to shop on Saturday
too and will take a trip to the supermarket if they need something for their
house．Saturday night is the time people show off their
new clothes．It's common for people to get dressed up
and go out．Some people go out for dinner，to all kinds of restaurants-Italian，Indian
or Chinese．
It is traditional on Sunday to go
to church．A lot of
places close on Sunday because of strict hours set by the government．Most people have a family day．
Sunday lunch is a big occasion，with roast（烤） bed，mast potatoes and vegetables．This often leads to a quiet night in，since
everyone is very full from lunch．By Sunday night people
wish they could have the weekend again．
1．People in the UK like to go to the shopping
malls______．
A．every
day
B．on Saturday
C．on
Sunday
D．on Saturday and
Sunday．
2．In this passage，the word
"occasion" means______
A．时刻
B．机会
C．地方
D．场合
3．According to this passage，which
is NOT TRUE?
A．On Saturday，young people do
some sports in the morning．
B．People like to dress themselves on new clothes on
Saturday night．
C．A lot of places close on Sunday，for people must go to church．
D．Sunday lunch is very important and usually lasts a
long time．
4．The best title for this passage would be _______．
A．UK weekends
B．Weekends are funny
C．We like our
weekend
D．Enjoy your weekend
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