OSLO ( Reuters) -Six of the world's eight bear species are under threat of extinction after the addition yesterday of the sun bear, the world's smallest type of bear, to a "Red List" which says China's panda is most at risk. The sun bear is threatened partly by poachers(偷猎者) who sell its bile(胆汁)as medicine, said the World Conservation Union which runs the list of the threatened wildlife.
"Things are getting worse for all the bear species except the American black bear which is unquestionably increasing," said Simon Smart, senior species adviser for the Union.
The addition of the sun bear to the authoritative "Red List" after a major review means the American black bear and the brown bear, found from Europe to Alaska, are the only two of eight species still considered robust(强的) . The sun bear, found in Asia from Bangladesh to Borneo and weighing up to about 70kg, was rated "vulnerable(脆弱的) " by experts at the Union,which consists of more than 80 governments, conservation groups and scientists. The union said there were several thousand sun bears in the wild. "We estimate that sun bears have declined by at least 30 percent over the past 30 years, and continue to decline at this speed," said Ron Steinmetz, head of the Swiss- based Union's sun bear expert team.
Scientists did not change the level of threat to any bear species (except sun bears). Deforestation, loss of habitat to roads and cities and poaching are among risks. The Asian black bear, the sloth bear and the Andean bear were all proved again as vulnerable after reassessment of land-living bears. The polar, the only species not reassessed, is separately rated as vulnerable. Pandas were regarded again as endangered, one step closer to extinction than vulnerable, in spite of China's protection efforts for the bamboo-eaters.
1.How many kinds of threats are particularly mentioned to bear species?
A.2. B.3. C.4. D.5.
2.According to the text, pandas.
A. are in the greatest danger of extinction on the "Red List"
B. are in less danger of extinction now with the China's protection efforts
C. are one step closer to extinction than ever before
D. are not among the 8 bears mentioned in the text
3.We can infer from the text that .
A. the World Conservation Union is not in charge of protecting wildlife in the world
B. pandas are rated as endangered after the reassessment
C. there are several kinds of land-living bears in the world
D. sun bears remain " vulnerable ", compared with 30 years ago
高二英语阅读理解简单题
OSLO ( Reuters) -Six of the world's eight bear species are under threat of extinction after the addition yesterday of the sun bear, the world's smallest type of bear, to a "Red List" which says China's panda is most at risk. The sun bear is threatened partly by poachers(偷猎者) who sell its bile(胆汁)as medicine, said the World Conservation Union which runs the list of the threatened wildlife.
"Things are getting worse for all the bear species except the American black bear which is unquestionably increasing," said Simon Smart, senior species adviser for the Union.
The addition of the sun bear to the authoritative "Red List" after a major review means the American black bear and the brown bear, found from Europe to Alaska, are the only two of eight species still considered robust(强的) . The sun bear, found in Asia from Bangladesh to Borneo and weighing up to about 70kg, was rated "vulnerable(脆弱的) " by experts at the Union,which consists of more than 80 governments, conservation groups and scientists. The union said there were several thousand sun bears in the wild. "We estimate that sun bears have declined by at least 30 percent over the past 30 years, and continue to decline at this speed," said Ron Steinmetz, head of the Swiss- based Union's sun bear expert team.
Scientists did not change the level of threat to any bear species (except sun bears). Deforestation, loss of habitat to roads and cities and poaching are among risks. The Asian black bear, the sloth bear and the Andean bear were all proved again as vulnerable after reassessment of land-living bears. The polar, the only species not reassessed, is separately rated as vulnerable. Pandas were regarded again as endangered, one step closer to extinction than vulnerable, in spite of China's protection efforts for the bamboo-eaters.
1.How many kinds of threats are particularly mentioned to bear species?
A.2. B.3. C.4. D.5.
2.According to the text, pandas.
A. are in the greatest danger of extinction on the "Red List"
B. are in less danger of extinction now with the China's protection efforts
C. are one step closer to extinction than ever before
D. are not among the 8 bears mentioned in the text
3.We can infer from the text that .
A. the World Conservation Union is not in charge of protecting wildlife in the world
B. pandas are rated as endangered after the reassessment
C. there are several kinds of land-living bears in the world
D. sun bears remain " vulnerable ", compared with 30 years ago
高二英语阅读理解简单题查看答案及解析
It is rather that we still do not know how many species there are in the world today.
A.misleading B.embarrassing
C.boring D.demanding
高二英语单项填空中等难度题查看答案及解析
It is rather ______ that we still do not know how many species there are in the world today.
A.misleading B.embarrassing C.boring D.demanding
高二英语单项填空中等难度题查看答案及解析
阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式,并将答案填写在答题卡上。
A population of the world's most invasive mosquito species was almost completely wiped out by1.experiment on two islands in the southem Chinese province of Guangdong, according to a study , which 2.(publish) Wednesday
The experiment successfully reduced the female Asian Tiger Mosquito population-the main source of bites and disease transmission-by up to 94%,3. (reduce) the number of reported human bites by 97%.
One of the Chinese study's4.(researcher), Xi Zhiyong, a professor at Michigan State University, has been a longtime pioneer in this field of study,5.is running a mosquito factory in southern China. He6.(previous) attempted to use sterilized(绝育的) male mosquitoes to mate with unaltered females In the new study,7. (publish) by the International Journal of Science, Xi and his colleagues attempted to cut mosquito numbers even8.(far) by limiting both males and females' ability to reproduce.
The results were so successful that they nearly9. (wipe) out the entire female mosquito population on the two islands.
Mosquitoes pose grave threats to human health beyond just irritating bites. However, there is currently no effective vaccine or treatment 10.most mosquito-transmitted diseases, leaving controlling the insects' populations one of the most effective control methods, according to the International Journal of Science.
高二英语语法填空简单题查看答案及解析
The Group of Eight ______ by eight of the world’s wealthiest nations in 1998.
A. was formed B. forms C. is formed D. formed
高二英语单项填空中等难度题查看答案及解析
LONDON (Reuters) — Children are dying for lack of drugs tailored to their needs, according to the World Health Organization (WHO), which launched a global campaign on Thursday to promote more research into child medicine.
More than half of the drugs currently used to treat children in the industrialized world have not been specifically tested on youngsters.
The problem is even worse in developing countries where price remains a major barrier and 6 million children die each year from treatable conditions.
In the case of HIV/AIDS, the few existing pediatric therapies(儿科的疗法)developed for children generally cost three times more than adult ones.
As a result, clinicians lack clear guidelines on the best drug to use and often have to guess at the correct dose.
Fortunately, the WHO has drawn up the first international List of Essential Medicines for Children, containing 206 products considered safe for children.
“But a lot remains to be done. There are priority medicines that have not been adapted for children’s use or are not available when needed,” said Dr Hans, the U.N. agency’s director of medicines policy and standards.
Medicines that need to be adapted to children’s needs include many antibiotics, pain drugs as well as combination pills for HIV/AIDS, tuberculosis and malaria.
The agency is building an Internet entrance linking to clinical trials carried out in children and will launch a Web site with the information early next year.
Testing medicines on children has always been a controversial issue, since good ethical(伦理的)practice requires informed agreement from people participating in clinical trials, which is difficult to obtain in the case of children.
As a result, research-based drug companies have been wary of developing child-friendly medicines and general companies have been slow to produce them at lower cost.
In an attempt to deal with the issue, both Europe and the United States now have special rules offering extended patent protection for drugs that have been tested on children.
1.Which of the following is the best title of the passage?
A. A Global Campaign to Promote Research into AIDS Medicine
B. WHO Says Children are Dying for Lack of Child-sized Drugs
C. Many People are Concerned about Children’s Drugs
D. Measures Taken to Develop Child-friendly Medicine Quickly
2.Which of the following medicine is not needed to be adapted to children’s need according to the passage?
A. Pain killers. B. Tuberculosis. C. AID pills. D. Flu pills.
3.Why has testing medicines on children always been a controversial issue?
A. It is against good ethical practice
B. Children shouldn’t take part in clinical trials.
C. It is hard to get informed agreement from children tested.
D. Parents don’t allow their children to be tested on medicine.
4.The underlined word “wary” in the last but one paragraph means _________.
A. fast B. fond C. cautious D. uninterested
5.What can be inferred from the passage?
A. There is still a long way to go on children’s medicine.
B. An Internet entrance is being built to link to clinical trials carried out in children.
C. Both Europe and the United States now have special rules offering extended patent protection for adults’ drugs.
D. Less than half of the drugs currently used to treat children in the industrialized world have not been specifically tested on youngsters
高二英语阅读理解中等难度题查看答案及解析
The Group of Eight (G8) ______ the richest eight countries in the world.
A. is consisted of B. consists of
C. is made up D. is composed with
高二英语单项填空中等难度题查看答案及解析
The Group of Eight (G8)______ the eight richest countries in the world.
A.is consisted of | B.is made up of | C.consist of | D.consists in |
高二英语单项填空简单题查看答案及解析
The Group of Eight ________ the eight richest countries in the world.
A. is consisted of B. is made up C. consists of D. consists in
高二英语单项填空简单题查看答案及解析
It is reported that the Group of Eight (G8)___ the eight richest countries in the world.
A. is consisted of B. consists of
C. is made up D. consists in
高二英语单项填空中等难度题查看答案及解析