题目内容
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. Why did ancient people usually live where there were plenty of trees
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远红外线干燥箱是用红外线照射被加热物体进行加热。( )
测量值的分散程度就越小，正态分布曲线也就越尖锐。( )
Task 2Directions: This task is the same as Task t. The 5 questions or unfinished statements are numbered 41 through 45. In everyday usage "hot" means "having a lot of heat". Many people think that "cold" is something completely separated from heat. But this is not true. "Cold" simply means "having little heat". Your life depends on heat. In fact, every living thing depends on it. Without heat, every living thing would be frozen to death. All living things get their heat from the sun, which provides the conditions in which life is possible. Since before the dawn of history, man has been able to make his own heat. He has been able to release the sun’s heat that is trapped in things such as wood, coal, and oil. And he has been able to use this heat. Heat has made civilization possible. With heat, man could melt metals. As man learned to use metals and fuels, industries grew. As a result, engines were invented. These are machines that change heat energy into mechanical energy. Engine can do the work of many men. Without engines industrial civilization is impossible. Yet when the first engines were built in the 17th century, men were still wondering about the nature of heat. "What is it" they asked. Not until the early years of the 19th century did they find the right answer. He has been able to release the sun’s heat that is trapped in things such as wood, coal, and oil. From this sentence we know ______.
下列程序执行后的输出结果是( )。 #include＜stdio．h＞ void func1(int i); void func2(int i); char st[]="hello，friend!"； void funcl(int i) printf("%c"，st[i])； if(i＜3)i+=2；func 2(i)； void func 2(int i) printf("%c"，st[i])； if(i＜3)i+=2；funcl(i)； main() int i=0； funcl(i)；printf("\n")；
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