Look ! This is a nice  1  .It’s Sunday morning. There   2 many boys and girls in the park. Some of them are singing   3  the tree. Some are   4  in the river. Other  5  are playing games on the hill.

Maria is an American girl. She is  6  to her classmates. She is in the park, too. What is she doing? She is sitting and   7  a book. She  8  _reading very much. Tom is an English boy. He is five. He is too young. He can’t   9  to school. Now he  10    a kite with his father in the park.

弛张热：（）

A、高热持续，24h体温波动不超过1℃ 

B、24h体温波动超过1℃，但最低温度未达正常 

C、24h体温波动于高热与常温之下 

D、急起高热，持续数日，高热重复出现 

E、高热数日，退热一日，又再发热数日