已发掘的秦始皇陵兵马俑，排列整齐，而且都面向东方，这是为什么？ ________

根据句意及首字母提示在横线处填上恰当的单词，使句子意思完整，语法正确。

1. Our class went on a p_______ on the hill last Sunday.  We had a good time.

2. If you want to buy the house, you'd better ask its o________.

3. The computer b_______to us. We can use it.

4. Work hard and you will c_______up with other people.

5. Don't make n_______. Your father is sleeping.

6. The newspaper reporter i _______the pop singer yesterday.

7. A monkey took a banana from me and e_______.

8. Mrs Brown was c________after a mouse out of the kitchen when I saw her this morning.

在电解水时，为了增强导电性，加入的电解质最好选用 (    )

A．Na₂SO₄

B．HCl

C．NaCl

D．CuSO₄

现给出下列四个命题：

①等边三角形既是轴对称图形，又是中心对称图形；②相似三角形的面积比等于它们的相似比；

③菱形的面积等于两条对角线的积；④三角形的三个内角中至少有一内角不小于60°．

其中不正确的命题的个数是（　　）

A．1个

B．2个

C．3个

D．4个

只支撑回转零件，不传递动力的转动的轴称为（）。

A.固定心轴

B.转动心轴

C.转轴

D.传动轴

《中华人民共和国刑法修正案(一)》中，没有对下列( )进行修改。

A．证券内幕交易和泄漏内幕信息罪

B．编造并传播证券交易虚假信息罪

C．操纵证券交易价格罪

D．洗钱罪