A．Their tasty meat.B．The principle of their defense sys-找考题网

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A．Their tasty meat.
B．The principle of their defense system against disease.
C．Their solid skin.
D．The principle of their birth modes.

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A Speech on Tele-education. 1．人们对远程教育的看法不一。 2．表明你的观点和看法。

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