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【单选题】
配位化合物[CoCl2(NH3)4]+ 正确名称是( )。A.
二氯·四氨化钴(II)离子
B.
二氯·四氨合钴(II)离子
C.
二氯·四氨化钴(III)离子
D.
二氯·四氨合钴(III)离子
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皮皮学刷刷变学霸
举一反三
【简答题】广告的特性有: 、 、 、 、劝告性、针对性、自控性、责任性。
【单选题】My friend Julia _ to Shanghai three times. She loves the city very much. [ ]
A.
has been
B.
had been
C.
has gone
【简答题】My advice is that he ______ the city at once. A) should leave B) leaves C) will leave D) has left
【单选题】My grandfather ___to be quite afraid to live in the city, but now he has __ to the life here.
A.
used; used
B.
was used; got used
C.
used; got used
D.
got used; been used
【单选题】— My God! I'm nearly lost in this city. — Yeah. The city ______ a lot. [ ]
A.
changed
B.
has changed
C.
is changing
D.
will change
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