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【简答题】
There are more than 3000 languages in the world today, but only about ten are major languages of the world. Among them English is the most popular. More than 350 million people speak English as their first language. Major English-speaking countries are Britain, Australia, New Zealand, Canada and the USA. Another 400 million speak it as a second language. No one knows how many people speak English as a foreign language. They usually learn English as a school subject instead of learning it from their parents. Chinese is the only language with more speakers than English. This is because of the large population of China. English is the language for a better understanding between peoples of the world. It is also the language for business and science. Nearly half of the business deals in Europe are done in English, and more than half of the science magazines are in English. English is widely used in the world’s computer network. And children should begin with English when they learn how to use computers. Through the English language peoples of different countries are able to work together and make things even better. 小题1:English is the most popular language in the world because __________. A.it has the largest number of speakers B.it is widely used C.it is an international language D.it is a language for world use 小题2:The world’s computer network takes English as ________. A.its only language B.one of the main languages C.a school subject D.a foreign language 小题3:If you want to learn how to use computers, you should _________. A.speak English well first B.work together with foreigners C.learn English first D.make things better 小题4:If you know English, you’ll be able to _________. A.do everything better than before B.understand what people from different countries say C.read nearly all the science magazines in the world D.read many science magazines in the world 小题5:The main difference between first language and second language is _________. A.first language is important             B.first language is learned from parents C.second language is learned at school     D.Both C and D.
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【单选题】我国对人体安全电压是这样规定的:以通过人体电流不引起心室颤动的最大电流30mA为极限。如果人体电 阻按1200Ω估算,则安全电压是 V。
A.
12
B.
24
C.
36
D.
42
【简答题】确定肿瘤的良恶性质,精原细胞瘤属于______性肿瘤,畸胎瘤属于______性肿瘤,黑色素瘤属于______性肿瘤,皮肤乳头状瘤属于______性肿瘤。
【单选题】黑色素瘤属于().
A.
良性肿瘤
B.
交界性肿瘤
C.
恶性肿瘤
D.
肿瘤样病变
E.
继发性肿瘤
【简答题】黑色素瘤属于( )肿瘤。
【判断题】取得导游资格证书的人员应持同旅行社订立的劳动合同或登记证明材料到当地市县旅游行政部门申领导游证。
A.
正确
B.
错误
【判断题】36V的安全电压是绝对安全电压。
A.
正确
B.
错误
【判断题】取得导游资格证书的人员应持同旅行社立的劳动合同或登记证明材料到当地市县旅游行政部门申领导游证
A.
正确
B.
错误
【判断题】取得导游资格证书的人员应持同旅行社订立的劳动合同或登记材料证明到当地市县旅游行政部门申领导游证。
A.
正确
B.
错误
【多选题】人体承受的安全电压是 V,承受的安全电流是 mA。
A.
36
B.
10
【判断题】取得导游资格证书的人员应持同旅行社订立的劳动合同或登记证明材料到当地市县旅游行政部门申领导游证。()
A.
正确
B.
错误
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