11. To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is _____.

A . 正确 B . 错误

A . where B . if C . and D . unle

A . open loop control B . feedback C . combining control D . integral proce

A . 占星术中的黄道带是用来卜卦，测算将来的。 B . 杀人命盘在卜卦中用来预告未来。 C . 十二宫图在占星术中用做预测未来。 D . 星辰表用于占星术中可先知先决。

A . costaggregation B . reserve analysis C . parametricestimating D . funding limit reconciliation

A .  crosscheck B .  list backup C .  confirm D .  resync E .  backup validate

A．Because it is extremely dangerous to conduct such research on an airplane. B．Because it remains a mystery what wavelengths are liable to be interfered with. C．Because research scientists have not been to produce the same effects in labs. D．Because experts lack adequate equipment to do such research. 此题为多项选择题。

Hardware will become a commodity while software and service will account for a greater share of computer companies' revenue, say market watchers. And growth in sales of special systems will come to a halt in the '90s. As more computer systems are based on such emerging standards as the Unix operating system, customers can pick and choose the best components from different vendors rather than relying on one supplier for complete computer systems. That will accelerate demand for service--rather than products--from vendors. It's the service, the support and the software that add all the value. The move to distributed computers linked by local area networks is increasingly becoming an alternative to centralized computers. A survey of 50 Fortune 1000 companies found that 72 per cent were replacing their minicomputers with personal computer networks. Some trends in the peripherals (外部设备) arena in the next decade are obvious--smaller, quicker, more features. But manufacturers of monitors, printers and disk drives will be looking beyond the computer industry toward future markets that hold vast sales potential. The automobile industry, for example, holds promise for peripherals vendors. It's very likely in the next five to ten years we'll see vehicles targeted at business executives with printers and fax (传真) machine capabilities built in. The main idea of the passage is about ______. A．the trends of the 1990s in computer industry B．the accelerating demands for software and service C．computers industry's close link with auto-industry D．the trends in the peripherals arena in the next decade

A．In less than 4 hours B．In less than 6 hours C．In less than 8 hours D．In less than 10 hours

A．物价变化对需求产生影响，能预见价格变化的程度是很有用的。 B．能预测物价变化对供求的影响程度是很有用的。 C．供求对物价能起反拨作用。预先得知其中的奥妙，必有好处。 D．物价变化对供求关系起作用。如有能力预测其产生的影响将大有益处。

A．物价变化对需求产生影响，能预见价格变化的程度是很有用的。 B．能预测物价变化对供求的影响程度是很有用的。 C．供求对物价能起反拨作用。预先得知其中的奥妙，必有好处。 D．物价变化对供求关系起作用。如有能力预测其产生的影响将大有益处。

A．carrier/actual carrier B．carrier/consignor C．consignor/carrier D．consignor/consignor

<img src='https://img2.soutiyun.com/ask/uploadfile/2748001-2751000/9ab2125cd642d6192fb64a8625ccdf9f.gif' />

The only solid piece of scientific truth abut which I feel totally confident is that we are profoundly ignorant about nature. Indeed, I regard this as the major discovery of the past hundred years of biology. It is, in its way, an illuminating piece of news. It would have amazed the brightest minds of the 18th. century Enlightenment to be told by any of us how little we know and how bewildering seems the way ahead. It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intellect. In earlier times, we either pretended to understand how things worked or ignored the problem, or simply made up stories to fill the gaps. Now that we have begun exploring in earnest, we are getting glimpses of how huge the questions are, and how far from being answered. Because of this, we are depressed. It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted. But we are making a beginning, and there ought to be some satisfaction. There are probably no questions we can think up that can' t be answered, sooner or later, including even the matter of consciousness. To be sure, there may well be questions we can't think up and therefore limits to the reach of human intellect, but that is another matter. Within our limits, we should be able to work our way through to all our answers, if we keep at it long enough, and pay attention. According to the author, really good science ______. A．would surprise the brightest minds of the 18th century Enlightenment B．will help people to make the right choice in advance C．will produce results which cannot be foreseen D．will bring about disturbing results

是 否

A．Warming up B．Pre-listening C．While-listening D．Post-listening