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问题 填空题

铅笔为什么有软和硬的差别呢？这是由于石墨太软，光用石墨做笔芯，既易断又易磨损，因此，生产上常在石墨粉末中掺进一些黏土粉末以增加硬度．黏土掺得越多，铅笔就越硬．下表为部分普通铅笔的标号及笔芯原料的配比：

试回答下列问题：

（1）下表中硬度最大的铅笔是（填标号）______；

（2）请列举石墨的另一种用途______．

标号

原料配比

2HHHB2B
石墨（质量分数）%74.0%75.2%81.3%85.5%
粘土（质量分数）%26.0%24.8%18.7%14.5%

答案

（1）因为2H铅笔中的粘土含量最高，所以硬度最大．故填：2H；

（2）石墨容易导电，可制作电极．故填：可制作电极．

填空题

Part 4


Questions 26-45


·Read the following text and decide which answer best fits each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.

Speaking Her Hind


By the time they turn 55, most Hollywood actresses see their careers start to fade. Not (26) for Susan Sarandon, who will help kick offthe fall movie season with three films.
(27) of the movies are likely to be blockbusters, but Sarandon chooses her (28) more for the stories they tell (29) for their commercial potential. "If we’re very lucky, these films will (30) questions that people will talk about," she says.
She’s done her own share of questioning, and arrived at a place in life (31) she’s not afraid to stand (32) her convictions—and then follow (33) with action. The eldest of nine children in a New Jersey Roman Catholic family, she stumbled into an acting (34) when she attended an audition with her ex-husband, Chris Sarandon. Twenty-five years and five Oscar nominations later, she (35) a Best Actress Academy Award for her role as Sister Helen Prejean in 1995’s Dead Man Waling, a searing film about capital punishment.
By (36) Sarandon was practiced at using her celebrity to (37) causes close to her heart. (38) , while presenting an award at the 1993 Oscars, she and longtime partner Tim Robbins, an actor and director, took 30 seconds of their podium time to speak on (39) of Haitian refugees with AIDS. "At the (40) of acting and activism is imagination," Sarandon says. "I’ve (41) had the ability to imagine being in someone else’s shoes."
She is a supporter of end-hunger and poverty (42) including Heifer International, Madre, and Habitat for Humanity, as (43) as the Center for Constitutional Rights. In the aftermath of September 11, she cooked for workers at Ground Zero, did benefit performances, and befriended firefighters and victims’ families.
Sarandon is (44) hands-on in the role she calls her (45) important—mother of three children.

A．parties

B．acts

C．schedules

D．programs
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单项选择题 案例分析题

女，35岁，开口受限6个月，既往有关节弹响史。临床检查见开口度1指半，开口型左偏。

治疗措施不包括（）.

A.局部注射硬化剂

B.局部关节理疗

C.垫治疗

D.手法复位

E.功能训练
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