顺序练习
话题练习
题型练习
口语评分
写作评分
单科机考
全科模考
A.
Some characteristics that are common in several languages
B.
A way to represent languages that are genetically related
C.
Which languages probably evolved from Proto-Indo-European
D.
Linguists' opinions about why languages change over time
正确答案:B
译文