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【单选题】
家用铁锅用水清洗放置后,出现红棕色的锈斑,在此变化过程中不发生的化学反应是A.
4Fe(OH)2+2H2O+O2=4Fe(OH)3
B.
2Fe+2H2O+O2=2Fe(OH)2
C.
2H2O+O2+ =4OH－
D.
Fe－3e=Fe3+
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举一反三
【单选题】Which of the following cities has the oldest Chinatown in North America?
A.
New York.
B.
San Francisco.
C.
Boston.
D.
San Diego.
【简答题】RAM一般又可分为两大类型:__和__。
【单选题】_______ has the second largest Chinatown in North America.
A.
Ottawa
B.
Toronto
C.
Vancouver
D.
Montreal
【单选题】In______, Chinatown has been the center of its Chinese community since the 1850s, which is a crowded and authentic ethnic neighborhood where Cantonese remains the first language for many.
A.
Boston
B.
New York
C.
Washington D.C.
D.
San Francisco
【单选题】The Indian old lady ________ live there ________. [ ]
A.
no; any more
B.
does not; any more
C.
no, any longer
D.
do not; any more
【简答题】London’s Chinatown has become a growing _______________.
【单选题】The board of directors_______has had different views on the current economy.
A.
strong
B.
stronger
C.
strongest
D.
strongly
【简答题】RAM一般又可分为两大类型()
【单选题】Chinatown has been the center of San Francisco's Chinese community since the 1850s. Its boundaries have expanded significantly since the 1960s, and the neighborhoods built there are generally wealthy.
A.
plentiful
B.
attractive
C.
friendly
D.
rich
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