1 this is an elegant, antimagnetic, waterproof, shock-protected and heat-resistant watch which is made of stainless steel and high-precision fittings.
2 they send out pulses of sound waves, pitched at 50,000 cycles per second, far above the limits of the human ear,which can hear sounds up to frequencies of about 20,000 cycles per second
3when they analyzed these rocks, they found “shocked” quartz grains-slivers with a particular arrangement of micro cracks believed to represent the relic left by an extraterrestrial impact
5 on the other hand, the person who is really guilty and whose past experience has prepared him for such tests can distort the results by anticipating the crucial questions or deliberately giving exaggerated responses to neutral ones.
6something further must be done to the amplified signals before they can be sent to the transmitting antenna.
7sometimes this fall, if all goes well, a revolutionary new undersea vessel will be lowered gently into the waters of monterey bay for its maiden voyage.
8if a free society doesn't help the many who are poor, it cannot save the few who are rich.
9 the amount of deformation is directly proportional to the applied stress provided the force does not exceed certain limit.
10 it doesn’t boil, despite temperatures reaching up to 400 degrees c, because it is under terrific pressure.
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1这是一只由不锈钢和高精度配件制成的手表，它既美观、又防磁、防水、抗震、耐热。
2人类的耳朵仅能听见最高频率为20000赫兹的声音，她（蝙蝠）却可以发送出大超过这个限制的高达
50000赫兹的声波脉冲。
3
在分析这些岩芯时，他们发现“冲击”石英颗粒——带有特殊排列的微裂缩缝的薄片，科学家
认为他们外层空间来的物体与地球碰撞留下来的遗迹。
5
另一方面，一个真正犯了罪的人由于过去的经验使他对这种测验有所准备，或对关键问题早
有所料，或对中性问题故作夸大的反应，他是能使测验结果出现反常现象的。
6对于放大了的信号，必须作进一步的处理后，才能把它们馈送到发射天线上去。
7
今年秋天，如果一切顺利的话，一艘革命性新潜艇将轻轻在蒙特利海湾下水，进行它的第一
次航行。
8自由社会要是不能帮助众多的穷人，也就无法挽救少数富人。
9如果外力不超过某一限度的话，那么形变量与外力成正比。
10尽管温度可高达摄氏400度，水却因为处于高压之下而不会沸腾。