题目内容
On Saturday afternoon, Mr. Green went to the market, (buy)（）some bananas and visited her cousin.
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听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的[A]、 [B]、[C]三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 What do we learn about the man
The mast fundamental group to which a person belongs is the family. The institution of the family exists in almost every human culture. It is considered by behavioral scientists to be one of the oldest institutions in human history.The family unit serves many important functions. The performance of these functions is the reason for the family’s importance. Above all, the family serves as a mechanism of species survival.Families also have important economic functions. In primitive societies, the tasks of gathering food and providing shelter were divided among family members. Today, both husband and wife may work and share the duties of homemaking and child mating.In addition to its survival and economic functions, the family gives its members social status. In many societies, a person is not considered a complete member until he has married and produces children. Finally, the family helps to meet the basic emotional needs of a person through the love and support received from parents, siblings(兄弟姐妹) and relatives. As it is used in the second paragraph of the passage, the word "mechanism" means（）
乙型脑炎：（）
阅读下面这篇文章，回答下列各题。粒子束武器粒子束武器大致分为三个主要部分，即由能源、电子喷嘴和集流加速器组成。能源，一般是靠核裂变或聚变的极高的脉冲功率形成。人们采用专门的核爆炸式的发电机，通过核裂变或聚变释放出大量的能量，发出高压脉冲电流。它通过控制开关和特殊传输线路在一瞬间传输给巨型贮能器，把脉冲电荷堆积起来，通过超高压开关在毫微秒计的时间内放电。流量压缩装置和电子注入器把脉冲高压转换成电子束，高强电磁场把它在长长的电子枪中加速，通过电子嘴向集流加速器喷射，作为形成和加速质子的媒介。集流加速器是粒子束的核心。在电子喷嘴和集流加速器之间，装有注入阀，引入Z质(如有一种加速器的Z质用氢气)，由于电子束的高速碰撞，电子被剥落，形成质子，并集流加速，最后接近光速发射出来，摧毁目标。粒子束武器的简单工作过程是：通过核裂变或聚变的形式实现爆炸或脉冲发电，以产生高功率的脉冲粒子束，这些粒子束以接近光速的速度射向目标，击毁目标。(选自《自然科学》14辑) 根据文意，下列判断不正确的是（）。
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