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我国先民的足迹遍布于祖国的东南西北,已经发现的遗址数以万计,但是地域文化却各具风采,其主要原因是 [ ]
1年前
课文《萤火虫》中,“这卵也能发一些微光,经过二十七八天,就孵化为幼虫,幼虫的身体有13个环节,长纺锤形,略扁平;头和尾是黑色的,体节的两旁也有黑点。”
1年前
---Is Jim in the office? ---No, he _______ to the dining hall. [ ]
1年前
He knows so much about Russia that he's universally acknowledged as a(n) _____ on Russian affairs.
1年前
Frogs eat pests which ________(破坏) crops and carry disease.
1年前