Last Thursday, a young woman saved an elderly man from a burning house on Garden Road. The young woman’s name is Kitty and she works in a clothes shop. The elderly man, Daniel, lives just opposite the clothes shop. On Thursday afternoon, Kitty looked out of the window. She saw some smoke coming from Daniel’s house and rushed over to see what was happening. The house was on fire and Daniel was inside. Kitty quickly called the fireman on 999. Then, she ran into the house to save Daniel. She found Daniel in his bedroom and he was frightened. Kitty helped Daniel out to a safe place. Five minutes later the fireman arrived and they put out the fire. No one was hurt.

The next day, Daniel said,“I am so grateful to Kitty. She saved my life.”Daniel also said,“In the future, I will be more careful. I don’t want another fire in my house.”

小题1:Kitty saved _______ from a burning house.

A．a young man

B．an old woman

C．an old man

D．a young woman小题2:The number to call the firemen in the story is__________.

A．eight nine nine

B．one one nine

C．nine eight eight

D．nine nine nine小题3: ________ was(were) hurt in the fire.

A．No one

B．Two people

C．Four people

D．Seven people小题4:. In the future, Daniel will be more_________.

A．grateful

B．carefully

C．careful

D．frightened

近年来，木糖醇作为一种新型甜味剂正在进入人们的生活，木糖醇是白色粉末状固体，化学式为C₅H₁₂O₅．试求：

（1）木糖醇的相对分子质量为______；

（2）木糖醇中C、H、O三种元素的质量比为______（填最简整数比）．