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Task 221. In the twentieth century, soot 22. If snow and ice covered areas begin melting, 23. A soot forcing is unusually effective, which 24. Hansen cautioned that greenhouse gases 25. Warming in the Northern Hemisphere was large in at middle and high latitudes. A. produces much more global warming than a carbon-dioxide forcing of the same magnitudeB. contributed to 25 percent of observed global warmingC. winter and springD. the warming effects increaseE. still surpass soot in warming the world's climate during the last centuryF. can be seen mostly in the Northern Hemisphere
Task 221. In the twentieth century, soot22. If snow and ice covered areas begin melting, 23. A soot forcing is unusually effective, which24. Hansen cautioned that greenhouse gases25. Warming in the Northern Hemisphere was large in at middle and high latitudes. A. produces much more global warming than a carbon-dioxide forcingof the same magnitudeB. contributed to 25 percent of observed global warmingC. winter and springD. the warming effects increaseE. still surpass soot in warming the world's climate during thelast centuryF. can be seen mostly in the Northern Hemisphere
The lowest temperature that man has ever known was recorded in Antarctica.
A、True
B、False
C、Not Given
下面的短文有10處空白，每處空白后的括號內有一個詞，請根據短文內容將其正確的形式填入文中，以恢復文章原貌。Online DatingOnline dating is a dating system which allows people to make contact and communicate with each other over the Internet, usually with the object of developing a ___41___(romance) relationship. Online dating services usually provide matchmaking over the Internet through the use of personal computers or cell phones. Online dating sites generally requires ___42___(apply) to provide personal information before they can search the database for other individuals using criteria they set, such as age, gender, race, religion and ___43___(locate) . Most sites allow members to upload photos of themselves and browsethose of others. Sites may offer ___44___(addition) services, such as online chatting, telephone chatting, and message boards. Some sites provide free ___45___(register) , but may offer services which require a ___46___(month) pay. For example, they may offer full access to profiles, but provide additional services topay, such as ___47___(place) users'profiles at the top of the list, making their profiles appear severaltimes in different places in the search result and giving them a more ___48___(advance) search engine to work with. In one real example, free users may only search for persons of ___49___(specify) age, gender and city, while subscribers may also search for such information as height, weight and interests. Other dating sites depend on advertising for their income. In recent years such sites havebecome ___50___(increase) popular.
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