滚动预算使预算期永远保持为（）。

有关原发性肝癌，下列错误的是（）。

A.绝大多数是肝细胞癌

B.肝细胞癌多在肝硬化的基础之上发生

C.原发性肝癌主要通过淋巴转移

D.肝细胞癌多见于男性

E.混合型癌最少见

阅读理解。

     When Christopher Columbus landed on the then unnamed Costa Rica in 1502, he saw many

Indians wearing gold earrings. So he thought the land must be rich in gold. He named the place

Costa Rica, which means "rich coast" in Spanish.

     Though little gold was found, Costa Rica today is indeed rich with coffee and bananas. Coffee

is the most important product in Costa Rica and most of it is exported (出口) to other countries

like America and West Germany. Bananas are the country's second most important export.

Costa Ricans also grow many other crops such as fruits, corn and beans for their own use. Costa

Ricans love colors and their houses are painted in bright colors.

     Education is very important to the Costa Ricans. Almost every village has a school and education

is a must for children between seven and fourteen years of age. Boys and girls go to separate

(单独的) schools. Classes begin in March and end in November. The other three months of the

year are harvest time and the children have to help their parents to pick coffee beans.

1. What's the main idea of the first paragraph?

A. How Columbus found Costa Rica.  

B. How Costa Rica got its name.

C. What the Costa Ricans wore.    

D. What language the Costa Ricans spoke.

2. The Costa Ricans may NOT paint their houses ______.

A. pink and red    

B. grey and black

C. blue and green      

D. yellow and orange

3. In Costa Rica, boys and girls between seven and fourteen ______.

A. must go to school              

B. study in the same school

C. do not have to go to school at all    

D. can choose to stop schooling at any time

4. This passage is mainly about ______.

A. Christopher Columbus        

B. Costa Rica  

C. some products from Costa Rica  

D. the education of Costa Rica

当錾削接近尽头约（）mm时，必须调头錾去余下的部分。

A．0～5

B．5～10

C．10～15

D．15～20

下列对非物质文化遗产的理解，不正确的一项是( )。

A．非物质文化遗产指各民族独特的传统杰出工艺及非文字形式的艺术、文学等文化表现形式

B．非物质文化遗产是世界各民族面临失传和正在失传的各种传统文化的总称

C．非物质文化遗产相对于有固定空间形式的文化遗产，是一种无形遗产、活态文化、民间文化

D．非物质文化遗产在中国民间有着不同文化形态的迭层和变体，体现了各民族文化形态血脉相连

中共全国代表大会有多少代表参加？