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【单选题】
船舶防污应该执行哪个文件______。Ⅰ.1973年国际防止船舶造成污染公约和1978年议定书(简称73/78防污公约)Ⅱ.1983年我国国务院颁发《中华人民共和国防止船舶污染海域管理条例》A.
我国船舶，不管航区，只要执行Ⅱ
B.
我国远洋船舶，在国外应执行Ⅰ，在国内应执行Ⅱ
C.
我国政府已致函国际海事组织加入公约，所以不管航区，应执行Ⅰ
D.
不管航区，Ⅰ与Ⅱ都要遵守执行
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举一反三
【单选题】设集合U={1，2，3，4，5}，集合M={3，5}，N={1，4，5}，则M∩ =' ' （ ）
A.
{5}
B.
{3}
C.
{2，3，5}
D.
{1，3，4，5}
【单选题】When was the hammock invented and by whom?
A.
The Indians had invented the hammock long before they came to South America.
B.
The Indians had invented the hammock long before the Europeans came to South America.
C.
The Europeans invented the hammock after they made acquaintance with the Indians.
D.
The Europeans had invented the hammock before they went to South America.
【单选题】设全集U={1，2，3，4，5}，集合M={1，3，5}，集合N={3，4，5}，则集合（C U M）∩N等于（ ）
A.
{4}
B.
{2，3，4，5}
C.
{1，3，4，5}
D.
?
【单选题】It’s not the whole nation rose up and drove the enemy out of their homeland.
A.
before long
B.
long before
C.
soon
D.
a long time
【单选题】Not ____ he died, he received an award for his selfless service to the old. [ ]
A.
long before
B.
before long
C.
long ago
D.
shortly before
【单选题】He said he had been to Hong Kong ____ and he would go there _____ once again. [ ]
A.
long before, before long
B.
before long, long before
C.
long ago, before long
D.
long before, long before
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