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问题 探究题

某校物理实验兴趣小组的几位同学在探究“影响物体重力大小的因素”实验中，进行了如下的实验探究：第一组：探究“物体重力的大小跟物体形状的关系”，他们用橡皮泥为实验对象，用小刀将橡皮泥雕刻成各种形状进行实验，实验数据如表一所示。

（1）分析上述的实验数据，第一组的同学得出实验结论：物体重力的大小与物体的形状有关。请你对此实验过程与实验结论作出评价。

评价：_________________________________________________________________

第二组：探究“物体的重力的大小跟物体的质量的关系”，下图就是实验装置，实验过程中他将实验数据记录在设计的表二中。

（2）请你在方格纸中作出关于G与m的关系图像。

（3）分析实验数据可以得出的论： __________________________ .

答案

（1）错，用刀雕刻橡皮泥过程中质量变小

（2）“略”

（3）同一地点物体的重力与其质量成正比

完形填空

Directions: Read the following passage. Fill in the numbered blanks by using the information from the passage.

Write NO MORE THAN THREE WORDS for each answer.

An apprenticeship is a form of on-the-job training that combines workplace experience and classroom learning. It can last anywhere from one to six years, but four years is typical for most. An apprentice spends the majority of the time in a workplace environment learning the practical skills of a career from a journeyman--someone who has done the job for many years. The rest of the apprentice's time is spent in a classroom environment learning the theoretical skills the career requires. Being an apprentice is a full-time undertaking.

One of the advantages of apprenticeship is that it does not cost apprentices anything. The companies that hire them pay for school. What's more, it offers apprentices an "earn while you learn" opportunity. They usually start out at half the pay of a journeyman, and the pay increases gradually as they move further along in the job and studies. Near the end of the apprenticeship, their wages are usually 90 percent of what a journeyman would receive. Apprenticeship also pays off for employers. It can offer employers a pool of well-trained workers to draw from.

Despite the advantages, apprentices are usually required to work during the day and attend classes at night, which leaves little time for anything else. Sometimes, they might be laid off(下岗) if business for the employers is slow.

Once they have completed the apprenticeship and become journeymen, they receive a nationally recognized and portable certification and their pay also increases again. Some journeymen continue employment with the companies they apprenticed with; others go onto different companies or become self-employed contractors.
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单项选择题 B型题

三角肌瘫痪，肱骨的重力作用可以导致（）

A.平肩

B.翼状肩

C.方肩

D.肩关节半脱位

E.肩关节疼痛
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