适合于成批数据处理方式的是（）。A.数据量大，收集费用高的数据处理 B.需经过一定积

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     In order to know a foreign language thoroughly(完全地), four things are necessary. First, we must

understand the language when we hear it spoken. Secondly, we must be able to speak it ourselves,

correctly with confidence(自信) and without hesitation(犹豫). Thirdly, we must be able to write it. We

must be able to make sentences that are correct in grammar.

     There is no short way to succeed in language learning. A good memory(记忆) is a great help, but it is

not enough only to memorize the rules from a grammar book. It is no much use learning by heart long lists(一览表) of words and their meanings, studying the dictionary and so on. We must learn by using the

language. If we are pleased with a few rules we have memorized, we are not really learning the language. We must "Learn through use". Practice is important. We must practise speaking and writing the language

whenever(无论何时) we can.

1. The most important things to learn a foreign language are_______.

A. understanding and speaking    

B. hearing, speaking, reading and writing

C. writing and understanding      

D. memorizing and listening

2. Someone hears and writes English very well, but he speaks it very badly. This is because____.

A. he doesn't understand the language when he hears it spoken

B. he doesn't have a good memory

C. he always remember lists of words and their meanings

D. he often hesitates to practice speaking it

3. One can never learn a foreign language well only by_______.

A. much practice             

B. studying the dictionary

C. learning through use

D. using the language

4. Which of the following is the most important in learning a foreign language?

A. A good memory.

B. Speaking        

C. Practice      

D. Writing.

5."Learn through use" means_______.

A. we use a language in order to learn it

B. we learn a foreign language in order to use it

C. we can learn a language well while we are using it

D. both B and C

心理咨询侧重学生心理疾病的消除和情感活动等的重建；心理治疗主要重在预防，防治性的功能较突出；而心理健康教育则在于学生心理调整技能的获得和心理潜能的开发。

网络202.112.24.0/25被划分为4个子网，由小到大分别命名为C0、C1、C2和C3，则主机地址202.112.24.25应该属于______子网，主机地址202.115.24.100应该属于______子网。

A．C0

B．C1

C．C2

D．C3

优化开发区域是指国土( )已经较高、资源环境承载能力开始减弱的区域。

A．开发元素比例

B．开发程度

C．开发密度

D．开发机制比例

简述主风机的工作原理？