下列不含矿质元素的一组有机物是[ ] A．淀粉、脂类、核苷酸 B．核糖、氨基酸、

阅读理解。

     A teenage girl couldn't stand her parents' family rules, so she left home.

     She wanted to be famous. But she had poor education and several years later she had to ask for food on the

street for a living. Now her father has died. Her mother is an old woman. But she is still looking for her daughter. She has been to every corner of the city. Everywhere she goes, she puts up a big photo of herself on the wall.

At the lower part of the photo she writes, "I still love you..., come back home!"

     One day, the daughter saw one of the photos. The face was familiar. "Is that my mother?" she moved

closer and read the words "I still love you..."She cried. When she got home, it was early morning. She

knocked on the door. The door opened itself. She rushed to her mother's bedroom. Her mother was sleeping.

She woke her mother up,"It's me! Your daughter is back home!" The mother and daughter held each other, full

of happy tears. The daughter asked,"Why is the door not locked? A thief could get in."The mother answered

softly,"The door has never been locked since you left."

     The door of parents' love for their children will never be closed.

根据短文内容, 回答下列问题.

1. Why did the girl leave home?

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2 .Why couldn't the girl be famous?

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3. Has her mother given up looking for her?

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4. What was the mother doing when the girl came back home that morning?

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5. 把文中画线的句子翻译成汉语.

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下列不计提折旧的固定资产是( )。

A．已提足折旧继续使用的

B．大修理停用的

C．季节性停用的

D．房屋建筑物

夜间施工增加费属于（）

A.直接费

B.其他直接费

C.现场经费

D.发生时单独列支的费用

莱姆病患者关节液中可检测到细胞因子是（）

A.IL-1

B.HLA-DR3

C.IL-2

D.HLA-DR2

E.HLA-DR4

随机投掷一枚硬币，则两次都正面朝上的概率是（）。

A.1/4

B.1/2

C.3/4

D.1