含羞草受到碰触后，展开的叶片会合拢，这种现象说明生物具有哪种特征？（ ） A．生

It was a cold winter afternoon before Christmas. My parents and I sat on the bench in Washington, D.C.’Union Station, waiting for the train. Inside the waiting hall were many people.

A boy sat nearby. His worn jacket, pale face, dirty hands all seemed to tell me that he was homeless.

“He must be cold and hungry. Maybe I should help him,” I said to myself.

Just at that moment, a well-dressed young couple walked towards him.

“Excuse me,” the man bent down. “My wife and I bought two meal boxes but one was enough for us. We hate to waste good food. Can you help us out and put this to use?” he handed the boy a meal box.

The boy thanked them and opened the box with joy and care. Suddenly he stopped. In the direction to which he looked, I saw an old man in rags-in a worn sweater, worn trousers and open shoes, entering the hall.

Putting the meal box aside, the boy stood and helped the old to his seat. He took off his jacket and covered it on the old man’s shoulders, saying, “A gentleman brought me this warm meal but I just finished eating. I hate to waste good food. Can you help me out?” He placed the still-warm meal box in the old man’s hands without waiting for an answer.

“Sure, son, but if only you share that sandwich with me. It’s too much for a man at my age. ”

We were all touched. Dad went away and soon returned with cups of hot chocolate and a big pizza. Mum and dad went up to those rags, “Excuse me…”

I rushed into a KFC and took out my pocket money. It was so cold that afternoon but I felt much warmer than I had ever thought possible.

小题1:Who gave the boy a meal box?

A．The young woman.

B．The old man.

C．The young man.

D．Mum and Dad.小题2:Why didn’t the boy have the meal?

A．He was not hungry.

B．He wanted to help the old man.

C．He didn’t like the food.

D．He saw a sandwich in the meal box.小题3:What did the writer most probably do at the end of the story?

A. He bought some food for the homeless.

B. He told his story to the people in the KFC.

C. He gave his pocket money to the homeless.

D. He asked the other passengers to help the homeless.

下图1是同一种生物体内，有关细胞分裂的一组图像，图2是该生物一个细胞中的DNA含量随细胞分裂而变化的曲线图，据图回答：

(1)图1中含同源染色体的细胞有________，其中①细胞继续分裂可形成的细胞是____________。

(2)可表示减数分裂某时期的细胞图是____________。

(3)基因突变和基因重组分别发生在所示的细胞中____________。

(4)图2中不含有染色单体的区间是_____________。②与图2对应的区间是____________。

区域经济的发展存在差异性。根据下列材料，结合所学知识，完成（1）～（5）题。

材料一：

    长江三角洲纺织业具有悠久的历史，丝绸纺织业是传统优势产业。盛泽与绍兴两大纺织业产业集群分别是环太湖与环杭州湾两个纺织业集聚区的核心。（图1）

材料二：

东北某城市以煤炭为主导产业的产业结构调整模式图（图2）

材料三：

山西某能源基地产业链示意图（图3）

（1）价值量最低的薄型织物分布在_________，价值量最高的纺机高档面料研发和品牌的市场开拓分布在_________。盛泽、绍兴集群中，在纺织服装产业价值链中的优势明显的是_________。

（2）简述长江三角洲发展纺织产业的优势区位条件。

________________________________________________________________________________

（3）材料二中字母A表示_________工业，B表示_________工业。

（4）试分析材料二所示产业结构调整模式的优点。

________________________________________________________________________________

（5）材料三的产业链体现了可持续发展思想，请说明理由。

________________________________________________________________________________

适度的（），既可使投资者和债权人承担较小的风险，又可使资金具有一定的利用效率。

A．利息备付率

B．偿债备付率

C．资产负债率

D．资产利润率

中外合资经营企业一方欲向合营他方转让其全部或部分出资时，如合营他方不同意，则欲转让出资方可以向合营各方以外的第三方转让出资。( )