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问题
问答题 简答题
将氧化物划分为玻璃生成体、网络外体和中间体化合物的依据是什么?
答案
参考答案:用单键强度来衡量不同氧化物生成玻璃的能力。
补全对话,情景问答
Match the sentences. (找上下句)
( )1. How many pencils can you see?
( )2. Oh, it's beautiful!
( )3. Who's he?
( )4. Is that boy your brother?
A. Thank you.
B. No, he isn't.
C. I can see five.
D. He's my friend, Jack.
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判断题
细胞结构简单无太多精细结构。
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