搜题请搜索小程序“爱下问搜题”
问题 单项选择题

下列关于染色体组、单倍体和二倍体的叙述，不正确的是（）

A.一个染色体组不含同源染色体

B.由受精卵发育成的，体细胞中含有两个染色体组的个体叫二倍体

C.单倍体生物体细胞中不一定含有一个染色体组

D.人工诱导多倍体的唯一方法是用秋水仙素处理萌发的种子或幼苗

答案

参考答案：D

单项选择题

商业银行按照( )可以分为个人贷款和公司贷款。

A．贷款额度

B．还款方式

C．主体类型

D．担保方式
查看答案
句型转换

句型转换。

1. Mr. White had lunch at school yesterday. (改为一般疑问句)

    _____ Mr White _____ lunch at school yesterday?

2. He was in a theatre yesterday. (改为否定句)

    He _____ _____ in a theatre yesterday.

3. Will you watch a nice film tomorrow? (用last night 改写)

   _____ you _____ a nice film last night?

4. Millie and Amy had a great time there. (改为同义句)

    Millie and Amy _____ _____ there.

5. There is something amazing about animals in the book. (改为一般疑问句)

    _____there _____ amazing about animals in the book?
查看答案