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生物的种类虽然繁多,但它们具有一些相同的基本特征:即都能生长和______后代,都具有应激性,都会进行_________;其中,_________是生物最基本的特征。
1年前
阅读理解 短文改错 Late in the afternoon, the boys put up their tent
1年前
I was _____ tired, so I went to bed early.
1年前
People often hear bad news on TV, the “Touching China” award on Tuesday sends a different message.
1年前
Look! The students are ________ (clean) their classroom.
1年前