“Changes should be made in the prison for the conditions there are _____,” said the reporter．
|
A．wonderful |
B．awful |
C．elegant |
D．awesome |
Mr．Smith was very glad _____ as the manager of the company．
|
A．being appointed |
B．having appointed |
|
C．to have appointed |
D．to have been appointed |
---Have you received Jack’s plan?
---Yes, but I don’t think his plan is _____．
|
A．worth being considered |
B．worthy to be considered |
|
C．worthy of considering |
D．worth to be considered |
______ history of the Qing Dynasty is _____ history of suffering, also one of being bullied and invaded（欺侮和侵略）．
|
A．不填; a |
B．The; the |
C．The; a |
D．The; 不填 |
1
When we look at the sky and see a bright light moving quickly across it or coming towards the earth, we talk about seeing a “shooting star” or a “falling star”. These moving lights are not, in fact, stars at all. They are small pieces of matter from outer space, which burn up as they enter the Earth’s atmosphere. The correct name of them is meteoroids. Any pieces that make it to the Earth’s surface without completely burning up are known as meteorites. A meteor is actually the name given to the light we see when a meteoroid is burning up.
When a meteorite hits the Earth at speeds between 11 and 72 kilometers a second, it can do amazing damage. A very large meteorite could knock the earth out of its orbit. If this happened, all life on Earth would probably become extinct（灭绝）. The path we follow around the Sun would change and as a result the Earth would become either much hotter or much colder. This change in temperature would affect sea levels and the amount of water in rivers. There would either be huge floods, which would cover most of the land with water, or the oceans would dry up and there would be a drought, which means a long period of time without rain. Either way, nothing could survive. If a large meteorite landed in the sea it would almost certainly cause tsunamis, which would race towards the land, destroying everything in their paths.
Although it is unlikely the Earth will be struck by a meteorite large enough to do that kind of damage, there is evidence of fairly large meteorites hitting the Earth in the past. In 1908 a large area of forest in Tunguska, Siberia was destroyed by a meteorite that came apart just before it hit the ground. The moon, however, has about three billion craters陨石坑caused by meteorites impacting影响 its surface. The reason more meteorites have reached the surface of the moon than the surface of the Earth is that the moon does not have enough atmosphere for the meteorites to burn up in. some of the meteorites that have reached the Earth’s surface have done considerable damage. Some scientists believe it was a change of climate caused by meteorites hitting the Earth that resulted in the extinction of the dinosaurs and other large prehistoric animals.
Scientists are especially interested in meteorites because they contain information about the solar system. It is widely believed by scientists that most meteorites are produced by collisions（碰撞） between asteroids (small planets). These collisions probably happened many billions of years ago. This means the physical and chemical structure of a meteorite can give scientists information about the early days of the universe.
【小题1】 The story is about ___.
A. floods caused by meteors
B. matter from outer space
C. life on Earth millions of years ago
D. meteorites that have damaged the moon
【小题2】 The Earth has ___.
A. three billion craters
B. fewer craters than the moon
C. more craters than the moon
D. a thinner atmosphere than the moon
【小题3】 Some scientists believe the dinosaurs became extinct because ___.
A. they were hit by meteors
B. meteorites landed on their nests
C. meteorites landed and changed the climate
D. they could no longer breathe the atmosphere
【小题4】 Meteors are ___.
A. small planets
B. the same as asteroids
C. from broken parts of asteroids
D. the light we see when meteoroids hit our atmosphere
1
October 31, 2009, California
Tsien Hsue-shen, PhD'39, one of the founders of the Jet Propulsion Laboratory, died on October 31, He was 98.
Tsien, born in the eastern Chinese city of Hangzhou, graduated from the National Qinghua University in 1934 and in August of 1935 he left China to study at the Massachusetts Institute Technology. In 1936 he went to the California Institute of Technology to commence graduate studies .Tsien obtained his doctor degree in 1939 and would remain at Caltech for 20 years, becoming the Goddard Professor and establishing a reputation as one of the leading rocket scientists in the United States.
In 1943, Tsien and two others in the Caltech rocketry group drafted the first document to use the name Jet Propulsion Laboratory. During the Second World War, he was amongst the other scientists participated the "Manhattan Project" .After World War II he served as a consultant to the United States Army Air Force. During this time, Conlonel Tsien worked on designing an intercontinental space plane. His work would inspire the X--20Dyna-Soar which would later be the inspiration for the Space Shuttle. In1945 Tsien Hsue--shen married Jiang Ying, the daughter of Jiang Baili--one of the Chinese nationalist leader Chiang Kai--shen's leading military strategists. But in 1950, the Chinese-born scientist was accused of harboring Communist sympathies and stripped of his security clearance.
In September 1955 he was permitted to leave for China, where Tsien resumed his research, founded the Institute of Mechanics, and went on to become the father of China's missile program, a trusted member of the government and Party's inner circle, and the nation's most honored scientist, Tsien retired in 1991 and has maintained a low public profile in Beijing, China. The PRC government launched its manned space program in 1992 and used Tsien's research as the basis for the Long March rocket which successfully launched the Shenzhou V mission in October of 2003.The elderly Tsien was able to watch China's first manned space mission on television from his hospital bed.
In his late years, since the 1980s, Tsien devoted himself to spirituality research, and advocated scientific investigation of traditional Chinese medicine, Qigong and "special human body functions".
【小题1】 The underlined word "commence" in this passage probably means ____
A. make up B. get C. begin D. promise
【小题2】 Tsien Hsue--shen got married at the age of ______
A.45 B.28 C. 24 D.34
【小题3】 What is the right order of the events related to Tsien Hsue--shen ?
a. his later life
b. return to China
c. career in the U.S.A
d. his early life and education
A. a-b-c-d B. d-c-b-a C. d-b-c-a D. c-b-d-a
【小题4】 Which of the following statements is NOT true?
A. Tsien Hsue--shen got a doctor's degree in 1939.
B. Tsien Hsue--shen married Jiang Ying, the daughter of Chinese nationalist leader Chiang Kai-shen.
C. Tsien Hsue-shen has made a contribution to the Space Shuttle.
D. Tsien Hsue-shen was interested in traditional Chinese medicine, qigong and "special human body functions" in his later life.
