题目内容

惠更斯原理认为波阵面上每一点ds，均可看作新的子波源，向四周发出球面波，任一点P的光强是所有这些子波源在该点振动的相干叠加。()

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Section A
Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item with a single line through the center. You may not use any of the words in the bank more than once.
Andrew Carnegie, known as the King of Steel, built the steel industry in the United States. And in this process, he became one of the 【S1】 men in America. His success resulted in part from his ability to sell the product and in part from his policy of 【S2】 during periods of economic decline, when most of his competitors were reducing their 【S3】 .
Carnegie believed that individuals should progress through hard work, but he also felt strongly that the wealthy should use their 【S4】 for the benefit of society. He opposed charity, 【S5】 instead to provide educational opportunities that would allow others to 【S6】 themselves.
Among his more 【S7】 contributions to society are those that bear his name, including the Carnegie Institute of Pittsburgh, which has a library, a museum of fine arts, and a museum of national history. He also founded a school of technology that is 【S8】 part of Carnegie-Mellon University. Other philanthropic gifts are the Carnegie Endowment for International Peace to 【S9】 understanding between nations, and the Carnegie Institute of Washington to fund scientific research.
There are 【S10】 Americans who have been left untouched by Andrew Carnegie&39;s generosity. His contributions of more than five million dollars established 2,500 libraries in small communities throughout the country and formed the nucleus of the public library system that we all enjoy today.
A preferring B presently C wealthiest D previously
E few F investments G fortune H expanding
I noteworthy J promote K help L shrinking
M opting N obstruct O many
【S1】
【S2】
【S3】
【S4】
【S5】
【S6】
【S7】
【S8】
【S9】
【S10】
请帮忙给出每个问题的正确答案和分析，谢谢！

第二节书面表达
请按下列要求用英语写一篇短文。
题目：如何在图书馆查到自己需要的书
目的：帮助新入校的学生了解如何使用图书馆。
字数：200—300字
内容：说明以下几点
——只知书名时如何查
——只知作者姓名时如何查
——既不知书名，又不知作者姓名时如何查

全息的思想是在1960年发明的，是由于激光的发明。()

光的衍射就是许许多多光束的干涉。()