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【单选题】
世界旅游业的发展趋势是国际旅游者的流向继续向( )地区转移A.
欧洲
B.
非洲
C.
拉美
D.
亚太
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举一反三
【单选题】When carrying a cargo of asphalt or molten sulfur，which are carried at temperatures of over 300°F，one of the biggest dangers is（）.
A.
water in the tanks or pipelines
B.
having the cargo too cool
C.
explosion of vapors after discharge
D.
inadequate ullage space
【简答题】麻纤维的主要组成物质为 ,毛纤维的主要化学组成是 ,丝纤维的主要组成物质为 。
【简答题】综合单价是由哪几部分费用构成的?
【单选题】Please read the following paragraph and judge which are supporting sentences. 1) In our society, young children are facing many dangers. 2) Threats to the well-being of children and adolescents repres...
A.
sentence 1) and 2)
B.
sentence 2) and 3)
C.
sentence2), 3), 4) and 5)
D.
sentence2), 3) and 4)
【单选题】The biggest dangers ______________ an area that politicians barely mention: the labor market.
A.
lie on
B.
lie to
C.
lie in
D.
lie with
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