题目

在测定大气压的实验中，因缺少大量程的弹簧测力计，小明设计并进行了如下的实验。 ①将蘸水的塑料挂钩吸盘按压在光滑水平的玻璃板上，挤出塑料吸盘内的空气，测出吸盘的直径 d； ②将装有适量细砂的小桶轻轻地挂在吸盘的塑料挂钩上； ③用小勺轻轻地向小桶内加沙，直到塑料吸盘刚好脱离玻璃板， 用天平测出这时小桶和沙的质量为 m。 请完成下列问题： 吸盘脱离玻璃板时，若不计塑料挂钩的质量，空气对塑料吸盘的压力大小是，测得数阅读表达(10分)In the Renaissance Period (文艺复兴时期) (1500-1650), people became interested in higher education. They wanted to learn the ancient languages such as Greek and Latin- languages that were used in the old times, and study mathematics, science, and so on. Many universities were set up during the 16th century.University education was a privilege (特权) of the rich. Girls were not allowed to attend and poor people could not afford to go. A member of a wealthy family could attend university at the age of ten. He might study in different universities and since the teaching was all done in Latin, it didn’t matter which country he studied in. It was not unusual for a young boy study one year in Italy and another in France without speaking either French or Italian.It was possible in the 16th century to complete university without learning how to read or write. Since books were handwritten, there was not enough to give one to each student. Often, only the teacher had a book. He would read to the students who would memorize what he said. Tests were oral, not written, In fact, many students finished school without ever writing a word.For the not so wealthy, grammar schools were built in towns. They learned basic grammar and mathematics, and took part in Bible study. At home, girls learned washing, cooking, dancing, and how to take care of their family. Poor children rarely attended school.The Renaissance was a time when learners did not simply accept what they were old. They did scientific experiments themselves to search for answers to the mysteries of the space. Copernicus calculated that the earth turned around the sun but was afraid to publish his works for fear that the Church would punish him. Galileo(伽利略) later supported this. The watch, the telescope and some others were some inventions of this period.1.What did people become interested in during the Renaissance Period?______________________________________________________________.2.Were the rich allowed to attend university at the age of ten?_______________________________________________________________.3.Only the teacher had a book in the 16th century, why?_______________________________________________________________.4.What did girls learn at home?________________________________________________________________.5.Who later supported the opinion that the earth turned around the sun?________________________________________________________________.