阅读短文，选择正确答案。
Once there lived a little girl named Patty in France. When she was very young, her father died, and her
family was very, very poor.
One Christmas Eve Patty said to her mother, "Mom, will Father Christmas come to our house tonight?" Her
mother felt very sad and shook her head.
Before she went to bed, Patty took off her little shoes and put them on the floor near the chimney (烟囱).
She said to her mother, "Perhaps Father Christmas will come."
All was white with snow outside, and it was very cold.
In the night a little bird with a broken wing (翅膀) fell down the chimney and entered one of the shoes. Very
early in the morning Patty woke up. She jumped up out of bed and ran to look into her shoes.
There she saw the little bird in one of the shoes. She picked up the shoe and ran to show her Christmas
present to her mother. She said, "Father Christmas did not forget me, Mom."
1. The story happened in _______. [ ]
A. spring
B. summer
C. autumn
D. winter
2. Which of the following statements is TRUE about Patty? [ ]
A. Her mother didn't love her.
B. She was an American girl.
C. Her father died before she was born.
D. She lived a poor life in her childhood.
3. Patty's mother shook her head because _______.[ ]
A. she would die soon
B. her daughter was badly ill
C. Patty's wish couldn't come true
D. the bird's two wings were broken
4. Patty put her shoe on the floor near the chimney to get a gift from _______. [ ]
A. her mother
B. Father Christmas
C. the bird
D. her father
5. From the ending of the story, we can see Patty was very _______. [ ]
A. sad
B. angry
C. happy
D. lonely
pC（g）达到平衡后，保持温度不变，将气体体积缩小到原来的1/2，当达到新平衡时，C的浓度为原来的1．9倍。下列说法中正确的是（ ）