单项选择题
English, like all other language, is constantly changing. When a language stops to change, we call it a dead language. Classical Latin is a dead language because it has not changed for nearly 2,000 years.
The change that is going on in a living language can be easily seen in the vocabulary. Old words die out and new words are added. Much of the vocabulary of Old English has been lost, and the development of new words to meet new conditions is one of the most familiar phenomena of our language. Change of the meaning can be seen from any page of Shakespeare. Nice in Shakespeare’s day meant foolish; rheumatism (风湿病) meant a cold in the head. Another change is pronunciation. Change in the vowel sounds has characterized English throughout its history. Old English start has become our stone; cu has become cow. Most of these changes are regular. Changes likewise occur in the grammatical forms of a language. These may be the result of gradual phonetic modification (语音变化). The person who says I knowed is only trying to form the past tense of this verb. This process is known as the operation of analogy (类比), and it may affect the sound and meaning as well as the form of words.
A．all of the Old English words have died out or changed their meaning
B．new words come out to meet the new situations
C．most of the changes in English vowel pronunciation are regular
D．the change in pronunciation may lead to the change in grammar