问题 填空题

Motivation is "the driving force within individuals that impels them to action." And goals are the sought-after results_____(1) motivated behavior.Motivation can be either positive or negative_____(2) direction. We may feel a driving force toward some object or condition, _____(3) a driving force away from some object or condition. For example, a person may be impelled toward a restaurant to fulfill a need, hunger, and away_____(4) an airplane to fulfill a need of safety. Some psychologists refer to positive drives_____(5) needs, wants or desires,_____(6) negative drives as fears or aversions._____ (7), though negative and positive motivational forces seem to differ dramatically_____(8) terms of physical and sometimes emotional activity, they are basically similar in_____(9) they both serve to initiate and sustain human behavior.____(10) this reason, researchers often refer _____(11) both kinds of drives or motives as needs, wants and desires.Goals, _____(12), can be either positive or negative. A positive goal is one toward_____ (13) behavior is directed and it is often referred to as an approach object. A negative goal is _____(14) from which behavior is directed away and it is sometimes referred to as an avoidance object. Since both approach and avoidance goals can be considered objectives of motivated behavior, most researchers refer to_____(15) types simply as goals. Consider this example. A middle-aged woman may wish to remain_____(16) attractive as possible. Her positive goal is to appear desirable, and_____(17) she may use a perfume advertised to make her irresistible. A negative goal may be to prevent her skin_____(18) aging, and therefore she may buy and use face creams._____(19) the former case, she uses perfume to help her achieve her positive goal — attractiveness; in the____(20) case, she uses face creams to help avoid a negative goal — wrinkled skin.

答案

参考答案:For

解析:习惯塔配。此处需填一个表示理由和原因的介词;而介词for与this reason可构成固定搭配:for this reason由于这个原因;如:For this reason,I’d like to meet him.因为这个原因,我要去见他一面。

实验题

(18分)

(1)如图所示,abcd为单匝矩形线圈,边长ab=10cm,bc=20cm。该线圈的一半位于具有理想边界、磁感应强度为0.1T、宽为20cm的匀强磁场中,磁场方向与线圈平面垂直。若线圈绕通过ab边的轴以100p rad/s的角速度匀速旋转,当线圈由图示位置转过90°时的瞬时感应电动势大小为___________V。

(2)某同学利用如图甲所示的实验装置验证机械能守恒定律.

(I)请指出该同学在实验操作中存在的两处明显错误或不当:

                                             

                                             

(II)该同学经正确操作得到如图乙所示的纸带,取连续的六个点A、B、C、D、E、F为计数点,测得点A到B、C、D、E、F的距离分别为h1、h2、h3、h4、h5,若打点的时间间隔为T,则打E点时重物速度的表达式为vE=         

(3)冬、春季节降水量少,广东沿海附近水位较低,涨潮时海水倒灌出现所谓咸潮现象,使沿海地区的城市自来水中的离子浓度较高,水质受到影响,为了研究咸潮出现的规律,某同学设计了一个监测河水电阻率的实验。它在一根均匀的长玻璃管两端装上两个橡胶塞和铂电极,如下图(1)所示,两电极相距L=0.314m,其间充满待测的河水。安装前他用如下图(2)的游标卡尺(图为卡尺的背面)测量玻璃管的内径,结果如下图(3)所示。

他还选用了以下仪器:量程15V、内阻300kΩ的电压表,量程300μA、内阻50Ω的电

流表,最大阻值为1kΩ的滑动变阻器,电动势E=12V、内阻r=6Ω的电池组,开关等各一个,以及导线若干。下图(4)坐标中包括坐标为(0,0)的点在内的9个点表示他测得的9组电流I、电压U的值。

根据以上材料完成以下问题:

(a)测量玻璃管内径时,应将上图(2)中的游标卡尺的A、B、C三部分中的__________________与玻璃管内壁接触(填代号);

(b)玻璃管的内径d=___________mm;

(c)图(4)中的9个点表示实验中测得的9组电流I、电压U的值,试写出根据此图求R值的步骤:

                                                                     

                                                                     

(d)上图(5)中的实物仪器部分已连线,将其他部分连接成能测出上图(4)数据的实物连接图;

(e)开头闭合前滑动变阻器的滑片应先滑至___________端。

单项选择题