更多"Edmund Halley figured out the orbit"的相关试题:
[单项选择]
Passage Three Edmund Halley was an English scientist who lived over 200 years ago. He studied the observations of comets (彗星) ,which other scientists had made. The orbit (轨道) of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems. However, Halley had a friend named Newton, who was a brilliant mathematician. Newton thought he had already worked out that problem, but he could not find the papers on which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse (椭圆形) . Now Halley set to work. He figured out the orbits of some of the comets that had been observed by scientists. He made a surprising discovery. The comets that appeared in the years 1531,1607, and 1682 all had the same orbit. Yet their appearances had been 75 to 76 years apart. This seemed very strange to Halley. Three different comets followed the same orbit. The more Halley thought abo
A. 1704
B. 1705
C. 1706
D. 1707
[单项选择]Man: I've figured it all out. It looks like it'll take us about 5 hours to drive from here to Chicago. Woman: It'd be more relaxing to take the train. But I guess we should watch our expenses. Question: What does the woman imply
[单项选择]Scientists figured out that human bodies are basically made of ______.
A. hydrogen, carbon, nitrogen, and oxygen atoms
B. water vapor, ammonia, carbon dioxide, methane and hydrogen
C. biomolecules and water
D. evolutionary molecules
[单项选择]Halley made a surprising, but correct prediction in the year ______.
A. 1704
B. 1705
C. 1706
D. 1707
[单项选择]Halley made his discovery ______.
A. by doing experiments
B. by means of his own careful observation
C. by using the work of other scientists
D. by chance
[单项选择]The author begins his article with Edmund Burke's words to ______.
A. call on scientists to take some actions
B. criticize the misguided cause of animal rights
C. warn of the doom of biomedical research
D. show the triumph of the animal rights movement
[单项选择]Edmund likes to drive at a speed ______ the traffic limit. I wonder how he always manages to escape ______.
A. having exceeded, to be fined
B. exceeded, having been fined
C. to exceed, to fine
D. exceeding, being fined
[单项选择]According to the passage the low-Earth orbit is ______.
A. the destination for most commercial payloads
B. a few hundred kilometers above the earth
C. about 36,000 kilometers away above the earth
D. a few hundred kilometers above the stationary orbit
[填空题]DIALOG系统的截断符号是（），ORBIT系统是（）。
[单项选择]. The orbit of a celestial body is usually in the shape of ellipse.
A B C D
[单项选择]It turned out why the tiger got out of the cage because the man in charge had forgot to lock it.
A. It turned out
B. why
C. got out
D. forgot
[单项选择]In this passage, "out of sight and out of mind" ( Lines 2 - 3, Para. 3 ) probably means ______.
A. being unable to think properly for lack of insight
B. being totally out of touch with business at home.
C. missing opportunities for promotion when abroad
D. leaving all care and worry behind.
