常温下,将铁片放入下列溶液中,能明显观察到有气体产生的是( ) A.浓硫酸 B.

题型:选择题

问题:

常温下,将铁片放入下列溶液中,能明显观察到有气体产生的是(  )

A.浓硫酸

B.稀硫酸

C.ZnSO4溶液

D.CuSO4溶液

考点:单质铁
题型:选择题

阅读理解

     ( l )Da Shan, a Canadian, is perhaps China's most famous foreigner. He speaks Chinese well. He

was born in 1965. He (2) started to learn Chinese when he studied at Toronto University. In order to

remember more Chinese words, (3)wrote, he, them, often, on, cards, small. Li . But he would only

memorize words he met with while reading, listening or talking in the following two weeks. "There's no

use learning words that don't appear often", he said. "And the best way to learn a foreign language is to

keep using it and understand the culture behind it, or you'll forget everything quickly."

      Da Shan says it is important to get into the language environment. (4)与中国朋友交谈  has helped

him learn not only the words, but also the country and its people.

1. 请将(1)处的句子翻译成汉语.

                                                                                 

2. 请用适当的词替换(2)处的单词.

                                                                                 

3. 将(3)的单词组合成一个完整的句子.

                                                                                 

4. 将(4)处的短语译成英语.

                                                                                 

5. What does Da Shan think is the best way to learn a foreign language?

                                                                                

题型:选择题

男,35岁,突发呼吸困难伴窒息感,查体:呼吸30次/分,呼气延长,双肺哮鸣音,无湿啰音,该病例排除心源性哮喘的主要依据是

A.性别

B.年龄

C.突然发病

D.呼吸未达40次/分

E.肺内无湿啰音

题型:选择题

现代农业是一个()。

A.动态的概念

B.相对的概念

C.绝对的概念

D.传统的概念

E.历史的概念

题型:选择题

部分性发作()。

A.痫性放电源于一侧大脑半球

B.痫性放电源于两侧大脑半球

C.海马硬化

D.部分性发作+意识障碍

E.枕颞区阵发性高波幅棘慢波或尖波

题型:选择题

什么是计算机网络?其主要功能是什么?

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