单项选择题
As modern linguistics aims to describe and analyze the language people actually use, and not to lay down rules for “correct” linguistic behavior, it is said to be _____.?
单项选择题 需要计算征收城建税、教育费附加和地方教育附加的税种有()
单项选择题 Of the following sound combinations, only _______ is permissible according to the sequential rules in English.( )
未知题型 1851年第一次国际博览会主建筑被称为 ,是世界上第一座用金属和玻璃建造起来的大型建筑。