花的主要部分是（） A．花柄和花托 B．花萼和花冠 C

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问题选择题

花的主要部分是（　　）

A．花柄和花托

B．花萼和花冠

C．雄蕊和雌蕊

D．子房和胚珠

答案

答案：C

选择题

( ) 1. Last Friday, Miss Liu told us about some interesting dinosaurs.	A.
( ) 2. I learned how to use reference books in the library.	B.
( ) 3. We should turn off the lights when we leave the room.	C.
( ) 4. The dress is eight hundred dollars. It's expensive.	D.
( ) 5. People are trying to protect these tigers. They live in the northeast of China.	E.
( ) 6. Disneyland is one of the greatest theme parks in the world.	F.

单项选择题

船舶主尺度按不同用途和丈量规则可分为最大尺度、（）和船型尺度等三种。

A、登记长度

B、登记宽度

C、登记尺度