割幽云十六州给契丹国的是 A.安禄山 B.朱温 C.石敬塘 D.韩颜徽

题型:

问题:

割幽云十六州给契丹国的是

A.安禄山

B.朱温

C.石敬塘

D.韩颜徽

考点:辽、宋、夏的和战,澶渊之盟
题型:

阅读理解。

     One day Mr and Mrs White went shopping by car. They stopped their car near the store. They bought

a lot of things and they wanted to put the things in the car. But Mr White couldn't open the door of the car,

so they asked a police-man to help them. The policeman was very friendly to help them. Just then a man

came up and shouted: "What are you doing with my car?" Mr and Mrs White took a look at the car's

number-Oh, no! It isn't their car.

1. Mr and Mrs White went            .

A. fishing  

B. shopping

C. business

2. They stopped their car            .              

A. near the park

B. near the sea

C. near the store

3.They wanted to put the things            .  

A. in a big bag      

B. in their car

C. in the  box

4. Mr White can't open thecar, so            .

A. they walked home

B. they asked a policeman for help            

C. they went home by bus

5. The policeman was _         .

A. excited  

B. helpful    

C. friendly

题型:

下列关于电解质溶液说法正确的是 (   )

A.水的离子积常数Kw随着温度的升高而增大,说明水的电离是放热反应

B.等体积的pH都为3的酸HA和HB分别与足量的Mg反应,HA放出的H2多,说明酸性:HA>HB

C.常温下,弱酸酸式盐NaHA溶液的pH=6,说明HA‾的电离程度大于其水解程度

D.pH=5的CH3COOH溶液和pH=5的NH4Cl溶液中,水的电离程度相同

题型:

元代雕漆巨匠是()和杨茂。

题型:

原油稳定

题型:

甩100%负荷后,机组达到稳定平衡时的导叶开度一定是空载开度。

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