题目内容
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The driver who had an accident last year was blamed for ______ his truck again．
去年出了一次车祸的司机又因为超载而受到指责。
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A、A. where
B、B. when
C、C. that
D、D. until
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C) The cattle were D) A cattle was
| 阅读理解。 |
| When he died in April of 1983, Dr. Joel Hildebrand was 101years old, who had been married for seventy-five years,and had taught freshman chemistry to over 40,000 college students. For his life, he had published a popular chemistry textbook and dozens of articles,had managed the U.S. Olympic ski team, and discovered a way to allow deep-sea divers to stay underwater longer.In his own way,Dr. Hildebrand was certainly a genius. Dr. Hildebrand's interest in chemistry began at an early age. In an interview, he once said that his interest had to make his own decision about what to pay attention to.Even as a student in high school, Dr. Hildebrand had the fame as the one who learned more chemistry than his teacher knew. As a result he was given the keys to the high school chemistry lab, and there he discovered that the correct formula (公式) for a certain chemical compound was not the one given in his chemistry book but a totally different one. Dr. Hildebrand went on to teach at the University of California at Berkeley and remained there for almost forty years. During that time, Dr, Hildebrand discovered that the gas helium (氦)could be combined with oxygen for use as diving gas to allow divers to dive deeper and take the great pressure of the water without the physical discomforts that had been experienced when that used another gas, nitrogen. The use of helium for deep-sea diving is now standard practice.Dr. Hildebrand was also valuable to his country during both world wars. In World War I he analyzed the poisonous gases used on the battlefield and helped develop a truck that could clean and treat soldiers' clothes which had been contaminated (弄脏) by poisonous gases during fighting. In World War II he helped develop a type of snowmobile,a vehicle used to carry the soldiers through the snow in northern countries. Dr. Hildebrand's retirement (退休) from teaching at the age of seventy was required by state law in California. He objected to this,joking he thought a teacher's time of retirement ought to be determined not by age but by how many of that teacher's students were still awake after the first fifteen minutes of class! Dr. Hildebrand's writing career continued,however, and was still feeling strong at the age of 100,when he published an article on the theory of chemical solutions. Dr. Hildebrand's love of life and his interest in it were an inspirations to all who knew him. When asked once how he could have such ageless energy and vigor, he said,"I chose my ancestors carefully." |
| 1. In the eyes of Dr. Hildebrand,television was probably_____. |
| A. powerful tool for knowledge learning. B. A favourable means to encourage learning. C. Something that was not helpful to people's attention D. Something that man had to use in their daily life. |
| 2. When Dr. Hildebrand was still a high school student, he was well known because ____. |
| A. he was good at chemistry. B. Could use the chemistry as he liked. C. His teachers were not so clever as he was. D. Discovered the formula for some chemical compound(成分) |
| 3. The use of helium in deep-sea diving ______. |
| A. is now still regarded as standard practice for deep-sea diving. B. was discovered with the help of Dr. Hildebrand's teachers. C. was a great help to the invention of snowmobiles. D. helped to make the divers love their job. |
| 4. The best topic of the passage should be _____. |
| A. A Man Who Loved His country Deeply B. A Well-know Professor of Chemistry C. A Man Who Lived a Long and Valuable Life D. The Greatest Discovery of the Century |
A、Mean circulatory filling pressure↑, Strength of cardiac contraction↑, Sympathetic nerve activity↑.
B、Mean circulatory filling pressure↓, Strength of cardiac contraction↑, Sympathetic nerve activity↑.
C、Mean circulatory filling pressure↓, Strength of cardiac contraction↓, Sympathetic nerve activity↑.
D、Mean circulatory filling pressure↓, Strength of cardiac contraction↓, Sympathetic nerve activity↓.
记者发现城市贫民窟里的住房拥挤程度是极为惊人的。
汤姆今天早上没去上学，因为他昨天在晚会上吃得太多，生病了。
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