Native to America, the cane toad was introduced to northern Queensland 70 years ago to control sugarcane beetles . The toads failed in that duty but spread across prefix = st1 /Queenslandand into neighboring northern area. Now it calmly invades the states of Western Australia and New South Wales (NSW). NSW wildlife experts fear _ --which have poisonous backs that kill hungry predators, --will have a terrible effect on native animals. Those fears may be about to be realized. Australia's leading government research body, the Commonwealth Science and Industry Research organization (CSIRO), forecasts a rise in average temperatures that will make NSW ideal living place for the cane toad. Tony Robinson, head of CSIRO's Wildlife,Pests,and Diseases Program, said climate change is increasing the amount of suitable living place for the toad. "With climate change, the cane toads might go down as far as Sydney and some areas of Western Australia," Robinson said. Recent estimates put the pace of the toad's westward march at nearly 17 miles(27 kilometers)a year and slightly slower from north to south. More southerly cities, such as Melbourne and Adelaide, would likely remain too cold and dry to ever suit the toads, Robinson noted, but Perthcould expect cane toads in five years' time. Sydney could see their arrival in the next 20 years. Robinson said there is no 0ne method that will keep the toads under control. The cane toads already cover at least half of Queenslandand most of the northern country the toads are believed to number in the billions. A Venezuelan virus was tried in the 1990s but had to be given up after it was found to also kill native frog species. Scientists and governmental bodies believe a national approach is needed. The main threat the toads cause to species such as dingos, quolls, goannas, and crocodiles is the poison contained in glands on each of the frogs' shoulders. The poison sprays out when the toads are threatened or handled roughly. The poison is made up of 14 different chemicals.... Which of the following can be the best title of the passage? A) Poison Toads Leap Across Australia B) Strategies To Keep the Toads Under Control C) The Main Threat the Cane Toads Cause D) Climate Favours the Spread of Cane Toads.
A
Mobile communications and the IP phone business have gradually replaced traditional long-distance calls. Mobile communications account for 28.5 percent of the total long-distance communications business. IP phones have 41.4 percent, while traditional long-distance calls are down to 30.1 percent. China Mobile, the country's largest mobile communication operator, has accounted for nearly 40 percent of taxes in the domestic telecom market. That puts it at the top of the six major telecom operators in the nation, according to the latest official statistics. The other five are: China Telecom, 31.1 percent; China Netcom, 16.6 percent; China Unicom, 13.4 percent; China Satellite Communications Corp and China Railcom, 1.5 percent. China Mobile is being chased by smaller rivals China Unicom and China Telecom, both of which are making significant 3G subscriber gains. That's aided in no small part by deals to offer the iPhone. However, as of March, China Mobile did have 15 million iPhone users on its network. In another ranking, Xiaomi, Huawei, Lenovo, vivo and OPPO came in as the top five mobile phone sellers in China by April, 2015, according to IHS Technology. The report also says that during this period, China produced 82 million handsets. (including GSM, GPRS and CDMA phones) and sold 80 million. Of the phones sold, 37 million were exported to other countries. Analysts point out that China's lack of core technologies and its heavy reliance on overseas technologies have proved to be an obstacle for development of domestic phone makers. Nowadays, mobile communications have gradually taken the place of _ . A) IP phone service B) telecom operators C) traditional telephones D) traditional long-distance calls
D
Q: Tea drinking was common in China for nearly one thousand years before anyone in Europe had ever heard about tea.People in Britain were much slower in finding out what tea was like, mainly because tea was very expensive. It could not be bought in shops and even those people who could afford to have it sent from Holland did so only because it was a fashionable curiosity. Some of them were not sure how to use it. They thought it was a vegetable and tried cooking the leaves. Then they served them mixed with butter and salt. They soon discovered their mistake but many people used to spread the used tea leaves on bread and give them to their children as sandwiches. Tea remained scarce and very expensive in England until the ships of the East India Company began to bring it direct from China early in the seventeenth century. During the next few years so much tea came into the country that the price fell and many people could afford to buy it. At the same time people on the Continent were becoming more and more fond of tea.Until then tea had been drunk without milk in it, but one day a famous French lady named Madame de Sevigne decided to see what tea tasted like when milk was added.She found it so pleasant that she would never again drink it without milk. Because she was such a great lady her friends thought they must copy everything she did, so they also drank their tea with milk in it. Slowly this habit spread until it reached England and today only very few Britons drink tea without milk. At first, tea was usually drunk after dinner in the evening No one ever thought of drinking tea in the afternoon until a duchess found that a cup of tea and a piece of cake at three or four o'clock stopped her getting "a sinking feeling" as she called it. She invited her friends to have this new meal with her and so, tea-time was born. This passage mainly discusses _ . A) the history of tea drinking in Britain B) how tea became a popular drink in Britain C) how the Britons got the habit of drinking tea D) how tea-time was born
A: A
(Question)
The US will seek to expand its own oil production in an attempt to reduce dependence on imported oil and bring down fuel prices , President Obama says . New contracts for exploration will be signed in non-protected areas of Alaska and in the Gulf of Mexico. In his weekly speech , the President insisted the US could reduce its need for imported oil and improve safety. Using his speech to tell Americans that he understood their concerns about rising prices, President Obama focused particularly on the price of fuel, which has risen in recent months. US consumers have historically enjoyed cheap fuel , but have seen prices rise in recent months even though US oil production in 2010 reached its highest level for seven years. Although the oil spill in the Gulf of Mexico in 2010 was serious, Mr Obama said the Gulf remained a key part of the country's future energy supply. The President's proposals come after Republicans introduced a series of proposals that would expand and speed up oil and gas production. The White House has criticized the Republican proposals for safety reasons , but Mr Obama was clear in his speech that he felt safety and environmental standards could be maintained even though production might rise. " I believe that we should continue to expand oil production in America --even as we increase safety and environmental standards ,"he said. "As a nation, we should be investing in the clean, renewable sources of energy that are the solution to high gas prices." Mr Obama has previously called for a step-change in energy policy, saying the US must move towards getting 80%of its electricity from clean energy sources by 2035. Mr Obama thinks the Republican proposals are _ . A) Not safe enough B) Not environmentally friendly C) Practical D) Clear
(Answer)
C