单选题 (单选题)In the Warring States Period, how many kingdoms fought for the dominion of China?

单选题 (单选题)Since 1979 all translated texts of Chinese diplomatic documents, as well as Chinese magazines published in foreign languages, have used the pinyin system for spelling __________ .

单选题 (单选题)__________ is now one of the working written languages of the United Nations.

单选题 (单选题)Chinese characters were once borrowed by the neighboring countries of_________ , thereby promoting international communication.

单选题 (单选题)In __________, it was written into the Constitution of the People’s Republic of China that Putonghua be popularized throughout China.

单选题 (单选题)For thousands of years, Chinese characters were written __________.

单选题 (单选题)Compared with the original complex Chinese characters, simplified Chinese characters with fewer strokes adapted from complex ones are much __________ to write and more convenient to memorize.

单选题 (单选题)Various dialects differ from each other in three aspects: pronunciation, vocabulary and grammar, with the difference in __________ being the most striking.

单选题 (单选题)There have been different names for the common speech of the Han people in different times in Chinese history. For instance, in the Ming and Qing dynasties (1368 –1911A.D.), it was called _____________.