回顾探究和实验：

（1）在做“用天平和量筒测定固体密 度”的实验时，某同学测量石块的质量如图甲所示，测量石块的体积如图乙所示，则石块的密度

为        kg／m³。

（2）在“研究滑动摩擦力的大小与哪些因素有关”的实验中：

① 用弹簧测力计拉着木块在水平桌面上做匀速直线运动；

根据             条件可知，木块所受摩擦力的大小等于弹簧测力计的示数。

② 将下图中       实验进行比较可知，滑动摩擦力的大小与接触面粗糙程度有关。

（3）右图是研究“牛顿第一定律”的实验装置，让同一小球从同一斜面相同高度由静止滚下，发现表面越光滑，小球速度减小得越          。进一步推理得出，运动的物体在              时，将永远做匀速直线运动。

Not only did the students ask for changes in the list of required subjects，but they also demanded the right to choose their courses according to their own taste and future needs．No more fixed programs,no guidance from educators and professors．All they wanted was to get their degree as fast as possible and go to work．

Although the educators didn’t all agree；a majority recognized that time had indeed changed and that education should perhaps adapt itself to the realities of modern society．Colleges and universities revised their programs to include a large number of specialized courses in business，nursing，engineering，and other professional fields．In the 1960s they also added courses requested by the students because they considered them“relevant(相关的)”(Women Studies，Revolution，or Black History)or useful(glass blowing，infant care，slow running，or family life)．The students were granted the right to choose their courses as they wished．Many traditional subjects had to be dropped，including history and foreign languages；the liberal education courses that were still useful were often neglected(忽视)by the students，who didn’t feel like working hard to learn something that was not required for graduation．

Whether the revised programs have helped college graduates to find employment quickly is not clear．But after fifteen or twenty years of experimentation，they have raised a lot of criticism．Some of it comes from the graduates themselves,who discover that their practical knowledge is neither deep nor flexible(灵活的)．As soon as they progress to higher positions，they find that they need management training and more study in their own field．Besides，they feel disabled by their lack of general knowledge,for example，by their ignorance of the language and culture of the foreigners with whom they are doing business. Most of all they suffer from their inability to use English，their own language，easily and properly.

小题1:The students also demanded      ，besides a change of program.

A．the right to choose their university

B．the right to choose their professors

C．the right to choose their degree

D．the right to choose their courses小题2:What was the reaction of the colleges towards the students’demand?

A．All the educators agreed with them.

B．None of the educators agreed with them.

C．A few educators agreed with them.

D．A few educators disagreed with them.小题3:Who is it that criticized the new system of education?

A．Graduates

B．Parents

C．Employers

D．Educators小题4:In the opinion of the critics，the main problems are      .

A．the general knowledge is too much

B．the practical knowledge is impractical

C．they learned too much useless knowledge

D．they are not able to use their knowledge effectively