用玉米幼苗作实验材料，利用如图实验装置进行探究活动．装置中隔板与无色透明钟罩之间以及隔板中央小孔与玉米茎之间都用凡士林密封，钟罩内放一小烧杯．分析并回答问题：

 Tim was reading a book at office. Someone knocked on the door. He opened the door.____  .
"My name is Rebecca," said the lady. "You've got to help me!"
"Take it easy." ____ "What happened?"
"My grandma died last month. She left all her money, about $1,000,000 to me. She told me she had saved the money in a bank.____ . "
"But yesterday when I went to the bank, I only got an envelope with nothing in it. he money is gone!"
Rebecca took the envelope out of her handbag and gave it to Tim.
Tim looked at it carefully under the light. It was just an envelope with two old stamps on it. ____ 
“Don't worry, Rebecca," he said. "Your money is still here.”

A.    B.    C.

D.    E.    

____  ____  ____  ____  ____

下列气温曲线、降水柱状图能反映北方地区气候特点的是（　　）