As discovered by expedition scientists, Antarctica has not always been so cold as it is today, so hasthe Arctic.
A、True
B、False
C、Not Given
Heaters should be kept going in the night for men to survive in polar areas.
A、True
B、False
C、Not Given
下面的短文有10处空白，短文后列出12个词，其中10个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。English and English CommunityThere is no denying that English is a useful language. The people who speak English today make up the ___31___speech community in the world with the exception of speakers of Chinese. Originally they were small tribes of people from northern Europe who ___32___in England. Their languages became more and more__33___to each other. Finally, the language had enough uniformity to be used by all speakers in England. The people were united into a speech community through their sharedlanguage. Speech community is similar to other kinds of ___34___. The people who make up the community share common language. Often they live side by side, as they do in a neighborhood, a village, or a city. More often they form a whole country. National boundaries. however, are not always the same as theboundaries of a speech community. A speech community is any group of people who ___35___the samelanguage no matter where they happen to live. We may say that anyone who speaks English36to the English speech community. For convenience, we may classify the speakers into two groups:one in which the speakers use English astheir native language, the other in which the speakers learn English as a second language for the___37___of education, commerce, and so on. English serves as an alternative language in several areas of public activity for most nations in the world which employ it as an 38second language. English has been adopted as the languageof air traffic, commerce, as well as international diplomacy. Moreover, English is the___39___of themajority of published materials in the world so that education has come to rely ___40___on an under-standing of English.
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