Vowels are usually distinguished according to the following three factors: the position of the tongue in the mouth, the shape of the lips, and the length of the vowels. Thus, the English vowel [i:] can be described as high, close, and long.

Vowels are usually distinguished according to the following three factors: the position of the tongue in the mouth, the shape of the lips, and the length of the vowels. Thus, the English vowel [i:] can be described as high, close, and long.

A.正确

B.错误

正确答案是F
Vowel are usually distinguished according to the following three factors the position of the tongue in the mouth, the shape of the lips, and the length of the vowels. Thus, the English vowel [i:]can be described as front, close, and long.
评分标准：答对得2分；正误判断错误扣全分，纠正错误不当，酌情扣分。