老年人结束锻炼应于睡前（）。 A.1小时 B.2小时 C.4小时 D.6小时 E.8

五、阅读下面文字，完成下面4个小题。

　　过不了多久，“智能”飞机的机翼可以像鱼尾一样自己弯曲，自动改变形状，从而改进升力或阻力。桥梁和电线杆在快要断裂时自己可以“感觉”到，它们会发出报警信号，然后自动加固自身的构造。空调机可以抑制自身震动。手枪只有在主人使用时才能开火。轮胎需要充气时，会礼貌地通知司机。反应灵敏的人工肌肉可以带动机器人或人的四肢。

　　以上仅仅是“智能材料”新科学预计将要产生的技术奇迹的一部分。一些智能系统已经悄悄走进了我们的日常生活，具有自我调节功能的汽车悬架可以识别路面变化，并相应改进自身的高度。智能滑雪板感觉到震动后马上就会产生减震的反作用力，增强边缘控制能。但它在许多重要领域的应用尚未到来。

　　马里兰大学智能材料和结构研究中心的詹姆斯西尔基斯说，“即将发生的第一件事”是出现“能对桥梁、建筑物和飞机机体等人类生活中造价高昂的物体结构受到的破坏发出早期警报”的系统。几个正在进行的项目把光纤用作桥梁的变形测定器。具有检测作用的纤维可与喷管一起使用，这些喷管可以把环氧树脂等加固材料直接喷到发现裂缝的地方。

　　许多科学家相信，在今后25年内，智能结构将大大改变飞机的形状，飞机将具有能在飞行过程中改变自身形状的控制面。

　　迄今为止，自适应系统依赖于三种基本类型的智能材料。一种是由遇到电和磁场后能够扩大、缩小或弯曲的物质构成的。陶瓷或薄膜等压电材料的使用尤为广泛，它们在受到挤压后会产生电压，或者反过来说，在施加电压时会变形。

　　压电传感器也可用在手枪枪柄上，这种手枪只有在查明主人的手特有的压力形式“标记”后才能开火。这种材料的灵敏度很高，据报道，用压电聚合物或凝胶制成的人造肌肉和皮肤已经能够在实验室的试验中“读出”布莱叶盲文。

　　压电物质能够在千分之几秒内作出反应，但它们的各项尺寸只能延展1%。因此，研究人员正在把压电物质和一种叫做“形状记忆合金”的第二类智能材料结合起来进行实验。它们即使在变形程度达到 15%的情况下，也能”记住”先前的外形，通过加热即可恢复。

　　第三类智能材料包括电或磁的流变体，这种神奇的液体在遇到电流或磁场时会改变它的粘性系数 (内在的粘度或抗流动性)，当它处于常态下，可以毫不费力地用勺子搅动，但是当其中有电流穿过时，它会突然间变得像混凝土一样粘稠。研究人员相信，用这种液体将可以制造出新型的汽车悬架和传动装置，以及减震系统和可变阻力的锻炼器械。

　　其他类型的传感器可以与智能材料一起为许多应用领域制造出特定的系统。西尔基斯的研究中心正在设计一组能够测量酸度、张力等内容的传感器，它们可以在电线杆超过使用年限时间时通知检验员。

不符合文意的一项是（）。

A．压电传感器是装在手枪柄上的只有主人“标记”的仪器

B．智能材料是一种具有自我调节功能的新型材料

C．光纤测定器将能够测出并弥合桥梁等的裂缝

D．迄今为止，自适应系统依赖于三种基本类型的智能材料

胸按压并发症包括（）

A.肋骨或胸骨骨折

B.心包填塞

C.肾挫伤

D.血、气胸

E.肺挫伤

56岁妇女，肌瘤病史15年，绝经5年。近半年 * * 不规则流血水样物，伴下腹疼痛和便秘。检查： * * 通畅，黏膜润泽。宫颈增粗，质硬，表面光滑。宫口扩张，可见暗红色息肉样赘生物，质脆，触血。子宫增大如孕4个月大小，质稍软，后壁明显突向直肠，活动度尚可。双侧附件区无异常发现，双侧主韧带、骶韧带无明显增厚。直肠黏膜光滑，检查时指套无血染。X线胸片未见异常。

需做的检查有（）

A.腹腔镜

B.血CA125

C.分段诊刮

D. * * 镜

E.血HCG

F.宫颈活检

G.妇科超声

It was a ruling that had consumers seething with anger and many a free trader crying foul. On November 20th the European Court of Justice decided that Tesco, a British supermarket chain, should not be allowed to import jeans made by America’s Levi Strauss from outside the European Union and sell them at cut-rate prices without getting permission first from the jeans maker. Ironically, the ruling is based on an EU trademark directive that was designed to protect local, not American, manufacturers from price dumping. The idea is that any brand-owning firm should be allowed to position its goods and segment its markets as it sees fit: Levi’s jeans, just like Gucci handbags, must be allowed to be expensive.

Levi Strauss persuaded the court that, by selling its jeans cheaply alongside soap powder and bananas, Tesco was destroying the image and so the value of its brands—which could only lead to less innovation and, in the long run, would reduce consumer choice. Consumer groups and Tesco say that Levi’s case is specious. The supermarket argues that it was just arbitraging the price differential between Levi’s jeans sold in America and Europe—a service performed a million times a day in financial markets, and one that has led to real benefits for consumers. Tesco has been selling some 15,000 pairs of Levi’s jeans a week, for about half the price they command in specialist stores approved by Levi Strauss. Christine Cross, Tesco’s head of global non-food sourcing, says the ruling risks "creating a Fortress Europe with a vengeance".

The debate will rage on, and has implications well beyond casual clothes (Levi Strauss was joined in its lawsuit by Zino Davidoff, a perfume maker). The question at its heart is not whether brands need to control how they are sold to protect their image, but whether it is the job of the courts to help them do this. Gucci, an Italian clothes label whose image was being destroyed by loose licensing and over-exposure in discount stores, saved itself not by resorting to the courts but by ending contracts with third-party suppliers, controlling its distribution better and opening its own stores. It is now hard to find cut-price Gucci anywhere.

Brand experts argue that Levi Strauss, which has been losing market share to hipper rivals such as Diesel, is no longer p enough to command premium prices. Left to market forces, so-so brands such as Levi’s might well fade away and be replaced by fresher labels. With the courts protecting its prices, Levi Strauss may hang on for longer. But no court can help to make it a great brand again.

The word "specious" (Line 4, Paragraph 2) in the context probably means（）

A. responsible for oneself

B. having too many doubts

C. not as it seems to be

D. raising misunderstanding

中国电信语音信箱有哪些功能？