题目内容
Bomb attack on
BOMBAY, India-Eight bombs exploded in first class compartments（车厢）of packed Bombay Trains Tuesday, killing 190 people and wounding hundreds in a well-designed terror attack on the heart of a city that embodies the ambition of the country.
Liu Xiang record warms
Liu Xiang of
Materazzi admits insulting Zidane
Marco Materazzi admits he insulted（侮辱）Zinedine Zidane before the France captain head-butted him in the World Cup final. Materazzi denies calling him a“terrorist.”Zidane and Materazzi exchanged words after Italy broke up a French attack in extra-time of Sunday’s final in Berlin Seconds later, Zidane lowered his head and rammed Materazzi in the chest, knocking him to the ground.
President Hu departs for G8 summit
BEIJING,July 16-Chinese President Hu Jintao left Beijing on Sunday morning for Russia’s St. Petersburg to attend the summit of the Group of Eight major economies. Hu is invited by Russian President Vladimir Putin. On Monday. Hu will meet with G-8 leaders to discuss energy security, prevention and control of epidemic diseases, education, African development and other topics. Among Hu’s entourages are State Councilor Tang Jiaxuan, Foreign Minister Li Zhaoxing, Director of the Policy Research Office of the Central Committee of the Communist Party of China（CPC）Wang Huning, Deputy Director of the General Office of the CPC Central Committee Ling Jihua, Director of thePresident’s Office Chen Shiju and Assistant Foreign Minister Cui Tiankai. The G-8 members are
68．From the first news item, we can infer that .
A．few Indian people are rich enough to take the first-class compartments
B．the terrorists spent plenty of time and efforts in planning the attack
C．an exact number of injuries has been discovered after the attack
D．the heart of the city
69．According to the news report, the old 110 metres hurdles world record .
A．has been kept for only two years since the 2004 Athens Olympics
B．was shared by Liuxiang and Jackson in
C．is raised by 12.88 seconds by Liuxiang in
D．was broken by Liuxiang in 2004 Athens Olympics.
70．What do the underlined words“exchanged words”mean in the third news item?
A．had a discussion B．had words with each other
C．exchanged opinions D．made a bargain
71．Which of the following statements is NOT true by the last news item?
A．
B．
C．
D．Health problems will not be among the topics in the G-8 summit.
Radioactive(放射性的) pollution can be said to be the emission(排放) of radioactive substance into air, water or land due to human activities in the form of radioactive waste. Radioactive waste is usually the product of nuclear fission(核裂变), which is widely used in nuclear power stations and nuclear weapons.
The radioactivity of nuclear waste decreases with time. That means the waste needs to be separated from the reach of living beings until it no longer causes a threat to living beings. This time period may take from days to months and to years depending upon the radioactive nature of the waste.
Radioactive pollution that is spread through the earth’s atmosphere is called ‘fallout’. Nuclear pollution began to attract people’s attention during the World War II period when the United States, Britain and the Soviet Union started conducing nuclear tests. The best example of fallout is the nuclear bomb attack on Hiroshima and Nagasaki, Japan in 1945 by the United States of America during World War II. As a result of the bomb attack, nearly 225,000 people died within 5 years of the attack due to the radiation effects and cancer.
In land and water, the major source of radioactive pollution remains with the nuclear fuel cycle(核燃料循环). The nuclear fuel cycle is used in nuclear power stations and extraction(提炼) of materials from nuclear substance, where the pollutants are left behind after the useful material has been extracted.
The effects of radioactive pollution were first reported in the early 20th century when people working in uranium mines(铀矿井) suffered from skin burn and cancer. The effects vary from one individual to another. Exposed to radioactive radiations for a long time, living beings may suffer from the damage to the DNA cells, which results in cancer, genetic defects for the generations to come and even death.
In a word, since every coin has its two sides, it’s a good idea to prevent from its disadvantages while making full use of its advantages.
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Title |
Radioactive Pollution and Its Effects |
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1. of radioactive pollution |
* It is the emission of radioactive substance. * Its waste is the product of nuclear fission. |
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The decrease of the radioactivity |
* It decreases as time 2. by. * The waste needs to be 3. from living beings until it no longer does 4. to living beings. * The time period of the decrease5. on the radioactive nature of the waste. |
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The 6. of radioactive pollution |
* In 1945, the nuclear bomb attack caused 225,000 7. . * In the early 20th, the miners suffered from skin burn and cancer and the effects are 8. . * A long 9. to radioactive radiations can damage the DNA cells. |
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Conclusion |
* We should10. its disadvantages and make full use of its advantages. |
