题目内容
造成约束、限制能量和危险物质措施失控的各种不利因素，如：电缆绝缘层破坏造成人员触电；压力容器破坏造成有毒气体泄漏导致中毒或爆炸。此类危险源属于（）。
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听力原文：What's the woman's hobby？
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某银行整体资产的VaR为4 000万元，其中业务单位的VaR、 VaRC如下表所示(单位：万元)。总经济资本为20亿元，则债券与外汇在期初应配置的经济资本分别为()亿元。
Task 2
Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45.
Thomas Alva Edison lit up the world with his invention of the electric light. Without him, the world might still be a dark place. However, the electric light was not his only invention. He also invented the phonograph(留声机), the motion picture camera, and over 1,200 other things. About every two weeks he created something new.
Thomas A. Edison was born in Milan, Ohio, on February 11, 1847 . His family moved to Port Huron, Michigan, when he was seven years old. Surprisingly, he attended school for only two months. His mother, a former teacher, taught him a few things, but Thomas was mostly self-educated. His natural curiosity(好奇) led him to start experimenting at a young age with electrical and mechanical things at home.
When he was 12 years old, he got his first job. He became a newsboy on a train that ran between Port Huron and Detroit. He set up a laboratory in a baggage car of the train so that he could continue his experiments in his spare time. Unfortunately, his first work experience did not end well. Thomas was fired when he accidentally(意外地) set fire to the floor of the baggage car.
Thomas then worked for five years as a telegraph operator, but he continued to spend much of his time on the job conducting experiments. He got his first patent(专利) in 1868 for a vote recorder run by electricity. However, the vote recorder was not a success. In 1870, he sold another invention, a stock-ticker, for ＄40,000. A stock-ticker is a machine that automatically prints stock prices on a tape. He was then able to build his first shop in Newark, New Jersey.
Thomas Edison was totally deaf in one ear and hard of hearing in the other, but thought of his deafness as a blessing in many ways. It kept conversations short, so that he could have more time for work. He called himself a "two-shift man" because he worked 16 out of every 24 hours. Sometimes he worked so intensely that his wife had to remind him to sleep and eat.
Thomas Edison died at the age of 84 on October 18, 1931, at his estate in West Orange, New Jersey. He left numerous inventions that improved the quality of life all over the world.
Thomas Edison worked ______ hours a day so he called himself a "two-shift man".
By describing the public relations companies that produce news videos, the author intends
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