在下列各项中，属于卢瑟福原子核式结构学说内容的是（ ） A．原子的全部正电荷和几

阅读下面短文,掌握其大意,从A、B、C、D四个选项中选出最佳选项.

   On Thanksgiving Day, a teacher asked her class of first-graders to draw a picture of something they

were thankful for. She thought that these children from poor families actually had little to be thankful  for.

And she found most of them drawing  pictures of  flowers  or tables  with  food. The  teacher  was  very

surprised to see the picture Douglas handed in. It's a hand, a simple hand.

   But whose hand? The class were very interested in the strange picture. "I think it must be the hand  of

God that brings us food," said  one child. "A farmer," said another, "because he grows  beautiful  flowers."

Finally when the others were at work, the teacher went over Douglas' desk and asked whose hand it was. "It's your hand, Teacher," he said quietly and shyly.

   She remembered that she had often taken Douglas, a dirty lonely child, by the hand while having a class 

  break. She often did that with the children. But it  meant so much to Douglas. Perhaps  this  is  everyone's  thanksgiving, not for the material things we get, but for the chance, in whatever small way, to give to

others.

1. Whose hand did Douglas draw?       

A.The farmer's.    

B. God's.

C.The teacher's.  

D. His own hand.  

2. Why did Douglas draw the picture?    

A. He was good at drawing it.          

B. His teacher asked him to draw it.

C. He wanted to show his thanks to the teacher.

D. He hoped to get a prize in drawing.

3. What do you learn about Douglas from the passage?

A. He was a lonely child.          

B. He was very active in class.

C. He always kept his hands clean.  

D. He often answered questions loudly.

4.  According to the passage, which of the following is an opinion, but not a fact?  

A. The teacher went over Douglas' desk and talked to him.

B. Different people show their thanksgiving in different ways.

C. The teacher often took Douglas by the hand after class.

D. Most of the students were drawing pictures of flowers or tables with food.

下列说法正确的是 [ ]

A. 葡萄糖和蔗糖互称同系物

B. 等物质的量的甲烷和氯气反应可制取纯净的一氯甲烷

C. 用NaOH溶液除去乙酸乙酯中混有的乙酸和乙醇

D. 甲苯能发生氧化反应、加成反应和取代反应

读我国东部某城镇信息。回答1—2题。

1、图中字母代表的土地利用类型有工业区、住宅区、商业区、小麦种植区、花卉区，其中表示商业区和

    花卉区的分别是[ ]

A、a和e

B、a和d

C、a和c

D、b和c

2、根据地租水平的高低，综合考虑交通、环保等因素，印染厂、水果批发市场、豪华宾馆依次选择在 [ ]

A、①④⑤

B、③④⑤

C、①⑤④

D、①②⑤

一般说来，新股发行价格的市赢率应高于股票市场上同类型股票的市赢率。

使用VC6打开考生文件夹下的源程序文件3.cpp，其中定义了类A、A1和A2，其中A1类由A类公有派生，A2类由A1类公有派生。
(1)定义类A的构造函数，该构造函数有一个整型的参数x，在构造函数中请将X赋值给数据成员a。请在注释“//********1********”之后添加适当的语句。
(2)定义类A1的构造函数，该构造函数有两个整型的参数x和y，在构造函数中请将X赋值给数据成员b，将y作为基类A构造函数的参数值传入。请在注释“//********2********”之后添加适当的语句。
(3)定义类A2的构造函数，该构造函数有3个整型的参数x，y和z，在构造函数中请将X赋值给数据成员c，将y和z分别赋值给基类A1构造函数的参数x和y。请在注释“//********3********”之后添加适当的语句。
(4)完成类A2的成员函数show的定义，该函数调用基类成员函数，输出基类书局成员a和b及类A2自身的数据成员c的值，上述3个值在输出时以空格隔开。请在注释“//********4********”之后添加适当的语句。
注意：除在指定位置添加语句之外，请不要改动程序中的其他内容。
程序输出结果如下：
7
3
7 3 8
注意：除在指定的位置添加语句之外，请不要改动程序的其他部分。
试题程序：
#include＜iostream.h＞
class A

int a；
public：
//********1********
int geta()return a；
；
class A1：public A

int b；
public：
//********2********
int getb()return b；
；
class A2：public A1

int c；
public：
//********3********
void show()

//********4********

；
void main()

A2 a(8，3，7)；
cout＜＜a.geta()＜＜end1；
cout＜＜a.getb()＜＜end1；
a.show()；