A.It is more comfortable and convenient to take a bus
B.It is worth the money taking a plane to Vancouver
C.It is not always more expensive going by air
D.It is faster to go to Vancouver by bus
第3题
A.She is going to Thailand
B.She is going on vacation
C.She likes collecting postcards
D.She has traveled all over the world
第4题
A.They can recognize the different surroundings
B.They can identify the sounds of the mother tongue
C.They can imitate the sounds of the second language
D.They can differ the sounds of two different languages
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