4．We'll take active part in social practice during the summer vacation.

　　________________________________________________________

　　答案：take后加an　take an active part in "积极参加......"。

　　5．You are in the charge of yourself, not anyone else.

　　________________________________________________________

　　答案：去掉the　in charge of "对......负责；控制......"。

　　Ⅲ.语法填空

　　Do you make friends __1__(easy)? Do a wall­sit test and you'll find out.

　　Researchers at the University of Oxford did __2__study with 101 participants aged between 18 and 34. Participants first __3__(fill) out questionnaires about their social lives, and they were then asked __4__ (press) against a wall with their __5__(knee) at right angles (直角) for as long as they could, __6__can be really painful.

　　The results showed that the longer the participants held the position, the bigger __7__(they) outer network-or distant friends they contacted once or twice a month-was. That was__8__the brain's painkilling system is associated__9__both pain tolerance and social bonding, which means that the more active this system is, the __10__(good) you are at both.

　　1．________ 　2.________ 　3.________ 　4.________ 　5.________ 　6.________ 　7.________ 　8.________ 　9.________ 　10.________

　　篇章导读：本文是一篇说明文。文章介绍了一项和交友有关的调查，具体方法如下：身体贴墙，膝盖弯曲成直角，根据保持这个姿势的时间长短可以推断出你的社交能力。

　　1．easily　考查词性转换。此处修饰动词短语make friends，所以要用副词，故填easily。

　　2．a　考查冠词。句意：牛津大学的研究者们做了一项调查，该调查由18岁到34岁之间的101个人参加。study "调查"，是可数名词，此处泛指"一项调查"，所以用不定冠词a。

　　3．filled　考查动词的时态。句意：参与者首先填写了关于他们的社交生活的问卷，然后他们被要求尽可能长时间地身体贴墙，膝盖弯曲成直角，这可能很痛苦。分析句子结构可知，该空应填谓语动词，而且是描述过去的事情，所以用一般过去时，故填filled。

　　4．to press　考查非谓语动词。ask sb. to do sth.为固定搭配，意为"要求某人做某事"，此处是其被动结构形式be asked to do sth.。故填to press。

　　5．knees　考查名词的复数。knee "膝盖"，是可数名词，其前有their修饰，所以要用复数形式，故填knees。

　　6．which　考查定语从句的引导词。设空处引导非限制性定语从句，引导词指代整个主句的内容，并且在从句中作主语，故填which。

　　7．their　考查代词。该空代替的是participants，而且后面有名词network，所以要用复数形式的形容词性物主代词，故填their。

　　8．because　考查表语从句的连接词。句意：这是因为大脑的镇痛系统与疼痛的耐受性和社会关系都有关，这意味着这个系统越活跃，你在这两个方面表现得越好。此处表原因，故填because。

　　9．with　考查介词。be associated with为固定搭配，意为"与......有联系"，故填with。

10．better　考查形容词的比较级。"the＋比较级，the＋比较级"为常用句式，意为"越......，越......"，故填better。