题目

读“常见的天气系统示意图”。回答问题。 （1）A天气系统的降水易发生在       （锋前或锋后），过境后，天气特征一般为             。B天气系统的降水易发生在           （锋前或锋后），B天气系统过境后的天气特征是                         。 （2）我国北方夏季的暴雨，多是            （填字母）形成的锋面雨；我国北方广大地区，秋季常在               （填字母）控制之下，秋高气爽；每年7、8月17、“Wow!”¨said Susan．“I have finished my homework and I’m going to paint a picture of our stairs(楼梯)．It’s for a competition in school tomorrow．”     “Do you need any help?”Mr．Cooper asked．“It’s almost time for bed．”     “I’ll be quick．”said Susan．“I wonder what colour to use．”     “Well, our stairs are brown,”said her father．“Thanks，Dad．”said Susan.     When she finished her picture，Susan began playing with her brush which was still wet．Then something happened．She dropped the brush right on the picture! There in the middle of her picture was a blob(污点)of brown paint!     “Oh，Dad! What will I do?”Susan cried．     “My picture is ruined(污损)．And it’s too late to paint another．”     “Let me see．”said her father．“The paint blob looks just like a spot(斑点)on a dog．All you have to do is to draw a dog around the spot!”     “That’s a wonderful idea!”cried Susan．She drew a dog around the blob of brown paint．“That looks just fine．You know，few things are as bad as they seem at first．With a little  imagination you can turn bad into good，”said Susan’s father．     The next day Susan went to school early．     When the competition began，Mr. King said，“I’ve chosen three pictures，and I want you to say which one you like best．That picture wins!”The children did not like the first one．The next picture was on black paper，but the stairs were red．So it was not so good．Then Mr. King showed the third painting．It was Susan’s!     “The stairs are straight．”said Joe．     “Yes．and the brown paint shows up well on the white paper，”said Lucy．     “And look at the little dog．”said Terry．“He seems to belong there．”     The children voted and Susan’s painting won．Mr. King handed her the prize-some paints．     “Susan had a good idea．”Mr. King said．”That little dog finished a good painting．It made the stairs seem real．”     Susan smiled．She would not give away her secret．But she could hardly wait to tell her father the news．He was right．With a little imagination you can turn something bad into something good! 1．Susan was going to draw a picture for _________．     A．fun                             B．her homework     C．a competition                     D．an exam 2．Susan drew the colour“brown”on the white paper because _________ A．she thought“brown”and“white”looked beautiful together     B．she didn’t like“red”on black paper     C．she thought her classmates would like it     D．the stairs in her house were brown 3．What does the word“something”in this passage mean?     A．Susan began to paint the picture．     B．Susan finished painting the picture．     C．Susan played with her wet brush．     D．Susan dropped the brush on the picture． 4．Mr．King thought that the picture was ____________．     A．bad        B．good           C．colourful         D．dark 5．Susan’s father thought that_______．   A．imagination sometimes could turn bad into good   B．the colour“brown”looked quite nice on white paper   C．the little dog made the picture bad   D．the stairs in the picture looked straight