请各位帮忙完成下面的四选一.并帮忙解释一下!我想知道这句子中,每题选项词汇的区别!

请各位帮忙完成下面的四选一.并帮忙解释一下!我想知道这句子中,每题选项词汇的区别!
1、he gave us a good _ of his experience
A.demonstration B.frequency C.description D.instruction
这个句子怎么翻译!

C
demonstration
[7demEns5treiFEn]
n.
示范,实证
demonstration
dem.on.stra.tion
AHD:[dµm”…n-str³“sh…n]
D.J.[7dem*n6strei.*n]
K.K.[7dWm*n6stre.*n]
n.（名词）
The act of showing or making evident.
证实：显示或制造证据的行为
Conclusive evidence; proof.
证明：无可置疑的证据；证明
An illustration or explanation,as of a theory or product,by exemplification or practical application.
验证：对理论或结果等用例子或实际应用说明或解释
A manifestation,as of one's feelings.
表示：表露,例如感情
A public display of group opinion,as by a rally or march:
示威：一种表达集体意见的公开行动,如通过集会或游行的方式：
peace demonstrations.
和平示威
frequency
[5fri:kwEnsI]
n.
频率,周率,发生次数
description
[dis5kripFEn]
n.
描写,记述,形容,种类,描述
description
de.scrip.tion
AHD:[d¹-skr¹p“sh…n]
D.J.[di6skrip.*n]
K.K.[d!6skr!p.*n]
n.（名词）
The act,process,or technique of describing.
描述：描述的行为,
A statement or an account describing something:
声明,叙述：描述某事的声明或叙述：
published a description of her travels; gave a vivid description of the game.
出版她的游记；关于这场比赛的生动描述
A pictorial representation:
用画表示：
Monet's ethereal descriptions of haystacks and water lilies.
莫内关于干干草垛和睡莲的精妙描绘
A kind or sort:
一种,一类：
cars of every size and description.
各种大小和类型的小汽车
instruction
[in5strQkFEn]
n.
指示,用法说明(书),教育,指导,指令
instruction
in.struc.tion
AHD:[¹n-str¾k“sh…n]
D.J.[in6str(k.*n]
K.K.[!n6str(k.*n]
n.Abbr.instr.（名词）缩写 instr.
The act,practice,or profession of instructing.
授课：讲授的行为,实践或职业
Imparted knowledge.
教诲：传授的知识
An imparted or acquired item of knowledge; a lesson.
传授的或获得的知识；课程
Computer Science A machine code telling a computer to perform a particular operation.
【计算机科学】 指令：告诉计算机如何执行特定程序的机器代号
Often instructions An authoritative direction to be obeyed; an order:
常作 instructions 指示：须遵守的权威指令；命令：
had instructions to be home by midnight.
午夜前必须回家的命令
instructions Detailed directions on procedure:
instructions 操作指南：关于步骤的详尽的指导：
read the instructions for assembly.
阅读生产线的操作指南