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所有的农药溶液均为酸性溶液。( )
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在内存中，存储字符’x’要占用1个字节，存储字符串"X"要占用 【11】 个字节。
Directions: This part is to test your reading ability. There are 5 tasks for you to fulfil. You should read the reading materials carefully and do the tasks as you are instructed.Task 1Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A), B), C) and D). You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the centre. Do you want to know something about the history of weather Don’t look at the sky. Don’t look for old weather reports. Looking at tree rings is more important. Correct weather reports date back only one century, but some trees can provide an exact record of the weather even further back. It is natural that a tree would grow best in a climate with plenty of sunlight and rainfall. It is also expected that little sunlight or rainfall would limit the growth of a tree. The change from a favorable to an unfavorable climate can be determined by reading the pattern of rings in a tree trunk. To find out the weather of ten years ago, count the rings of a tree trunk from the outside to the inside. If the tenth ring is far from the other rings, then it is certain that plenty of sunny and rainy weather occurred. If the rings are close together, then the climate was bad for the tree. Studying tree rings is important not only for the history of weather, but also for the history of man. In a region of New Mexico you can find only sand -- no trees and no people. However, many centuries ago a large population lived there. They left suddenly. Why A scientist studied patterns of dead tree rings which had grown there. He thought that the people had to leave because they had cut down all the trees. Trees were necessary to make fires and buildings. So, after the people destroyed the trees, they had to move. In this instance, studying tree rings uncovered an exciting fact about the history of man. The scientists are interested in studying tree rings because they can tell ______.
In less than 30 year’s time the Star Trek holodeck will be a reality. Direct links between the brain’s nervous system and a computer will also create full sensory virtual environments, allowing virtual vacations like those in the film Total Recall.61) There will be television chat shows hosted by robots, and cars with pollution monitors that will disable them when they offend. 62) Children will play with dolls equipped with personality chips, computers with in-built personalities will be regarded as workmates rather than tools, relaxation will be in front of smell-television, and digital age will have arrived.According to BT’s futurologist, Ian Pearson, these are among the developments scheduled for the first few decades of the new millennium(a period of 1,000 years), when supercomputers will dramatically accelerate progress in all areas of life.63) Pearson has pieced together to work of hundreds of researchers around the world to produce a unique millennium technology calendar that gives the latest dates when we can expect hundreds of key breakthroughs and discoveries to take place. Some of the biggest developments will be in medicine, including an extended life expectancy and dozens of artificial organs coming into use between now and 2040.Pearson also predicts a breakthrough in computer human links. "By linking directly to our nervous system, computers could pick up what we feel and, hopefully, simulate feeling too so that we can start to develop full sensory environments, rather like the holidays in Total Recall or the Star Trek holodeck," he says. 64) But that, Pearson points out, is only the start of man-machine integration:" It will be the beginning of the long process of integration that will ultimately lead to a fully electronic human before the end of the next century."Through his research, Pearson is able to put dates to most of the breakthroughs that can be predicted. However, there are still no forecasts for when faster-than-light travel will be available, or when human cloning will be perfected, or when time travel will be possible. But he does expect social problems as a result of technological advances. A boom in neighborhood surveillance cameras will, for example, cause problems in 2010, while the arrival of synthetic lifelike robots will mean people may not be able to distinguish between their human friends and the droids. 65)And home appliances will also become so smart that controlling and operating them will result in the breakout of a new psychological disorder—kitchen rage. Children will play with dolls equipped with personality chips, computers with in-built personalities will be regarded as workmates rather than tools, relaxation will be in front of smell-television, and digital age will have arrived.
石英玻璃器皿耐酸性很强，在任何实验条件下均可以使用。( )
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