北美洲的落基山脉和南美洲的安第斯山脉构成了世界上最长的科迪勒拉山系。[ ]
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----I’m afraid I’ve broken your cup.
----______________, it was old and I was going to throw it away.
A.Never mind
B.Don’t mention it
C.Forget that
D.How come
My chest when I take a deep breath, doctor.
A.hurts
B.wounds
C.harms
D.injures