_长沙成考网

One of the reasons why men invented certain sounds to express thoughts and actions isthat．

• A、they could agree upon certain signs  
  

• B、they could write them down
  

• C、they could communicate with each other 
  

• D、they could combine them

The main idea of this passage is that．

• A、many animals die during hibernation
  
• B、hibernation protects animals during the wintertime
  
• C、scientists feel puzz1ed about hibernation
  
• D、some bats hibenlate and others do not

  你是刘玲(Liu Ling)，写一封给晓东(Xiao Dong)的道歉信，讲明道歉的原因、解决问题的办法，以弥补因晓东来拜访而自己不在家给他带来的沮丧。