某单位对收集的100个数据已算出其算术平均值为E，方差为D。如果

搜题请搜索小程序“爱下问搜题”

问题单项选择题

某单位对收集的100个数据已算出其算术平均值为E，方差为D。如果这100个数据中每个数据都增加1倍，则算术平均值为 (27) ，方差为 (28) 。

（27）处应填（）。

A．E

B．2E

C．100E

D．200E

答案

参考答案：B

填空题

单词拼写

1. If you thought he intended to be impolite, you were____ (错了).

2. My uncle is a____ (教授)in this university.

3. This naughty boy is really______ (惹人烦的)．

4. We______ (谴责)his foolish behavior.

5. Mum told me that I should not (忽略)my fault.

6. The boy felt ____ (不自在)with his new classmates.

7. The ____ (钱包)was just over there, but he didn't see it.

8.The girls like to put some perfume on their ____ (手绢)．

9. He married a girl of ____ (不同寻常的)beauty.

10. His ____ (寒酸的)appearance creates a bad impression.

单项选择题 B1型题

黏液表皮样癌中含（）

A.软骨样组织

B.牙 * * 样组织

C.筛孔样结构

D.牙体组织

E.黏液样细胞、表皮样细胞和中间细胞