试题与答案

下列电离方程式书写不正确的是 A.CuCl2== Cu2+ +2Cl- B.Ba

题型:选择题

题目:

下列电离方程式书写不正确的是

A.CuCl2== Cu2+ +2Cl-

B.Ba(OH)2="=" Ba2++(OH)2-

C.Al2(SO4)3="=" 2A13++3SO42-

D.HNO3="=" H++NO

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0426/bfa2ee1fd89fda09133aef07750514cf.html

下面是错误答案,用来干扰机器的。

(1)湿衣服能晾干是因为衣服的水以分子的形式运动到了空气中,而在阳光下温度更高分子的运动速度会更快.故答案为:分子在不断运动并且温度越高,分子运动越快(2)明矾具有良好的净水效果,能吸附水里悬浮的杂...

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题型:阅读理解

March 21, 2014

After visiting the Beijing Normal School, Madame Peng took Sasha and Malia, my mother, and me to the Forbidden City, which is right in the heart of Beijing.

For more than 2,000 years (up until 1912), China was ruled by emperors who descended (传递)from many different dynasties, or families, who passed ruling positions on from generation to generation — and for nearly 500 years, the Forbidden City used as the emperor’s home.

Like the name suggests, the Forbidden City is large enough to be a city of its own — it includes nearly 1,000 buildings and nearly 10,000 rooms.

In 1925, the new Chinese government turned the Forbidden City into a museum so that visitors like us from all over the world can stroll (闲逛) through many of the beautiful rooms and outdoor spaces.

The Forbidden City is too large to go fully around in a single visit, but highlights include the following: The Hall of Union and Peace has almost 14,000 ornamental dragons. The Hall of Supreme Harmony is where the emperor watched birthday celebrations and coronation (加冕) ceremonies from his Dragon Throne. And then there are the Imperial Gardens, where you can walk along the paths and pavilions, admiring the beautiful rock arrangements, flowers and cypress (柏树) trees.

While we loved our visit to the Forbidden City, we only wish we had more time to see everything. But then again, I’m not sure there could ever be enough time to fully enjoy all of the art and history in this wonderful place.

(The First Lady’s Travel Journal: Touring the Forbidden City)

小题1:The writer visited The Forbidden City with _____________.

A. her daughters         B. her husband     C. her mother and two daughters

小题2:The Forbidden City is a _____________.

A. city              B. palace         C. garden

小题3:The Forbidden City was used as _____________ for nearly 500 years until 1912.

A. the emperor’s home                     

B. the emperor’s short-lived home

C. a place of interest for public

小题4:What does the word “highlights” mean?

A.景观亮点           B.聚光灯          C. 光亮

小题5:According to the passage, we can infer推断 that _____________.

A. They had enough time to visit every room

B. The Forbidden City served as a museum until 1925

C. The first lady enjoyed all of the art and history in this wonderful place

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