自然数的个数是有限的。[ ]
错误
I’ve included some photos in my letter will help you picture the places I
worked as a volunteer teacher.
A.that, which
B.which, where
C.which, that
D.\, in which
按照市场职能分类,证券市场可以分为( )。
A.股票市场、债券市场和投资基金市场B.发行市场和流通市场C.场内交易市场和场外交易市场D.有形市场和无形市场