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问题 单项选择题

下列有关色盲的叙述中，正确的是（）

A.女儿色盲，父亲一定色盲

B.父亲不是色盲，儿子一定不是色盲

C.母亲不是色盲，儿子和女儿一定不是色盲

D.祖父的色盲基因有可能传递给他的孙女

答案

参考答案：A

仿写题，造句

看一看，写一写。

Model:

                     

He ate a hamburger yesterday.

He is eating an apple now.

He is going to eat a banana tomorrow.

A．

                     

1.                                                                       

2.                                                                       

3.                                                                       

B．

                   

4.                                                                       

5.                                                                       

6.                                                                       
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选择题

下列昆虫的发育过程均为完全变态的是（　　）

A．蝗虫、蜜蜂

B．家蚕、蝴蝶

C．苍蝇、蝗虫

D．蟋蟀、蝼蛄
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