晶体的格子构造中内部质点在不同方向上排列一般是不一样的，因此晶体的（）因方向不同而出现差异。
参考答案：性质
把100mL 3mol/L氢氧化钠溶液跟100mL 1mol/L氯化铝溶液混合，生成氢氧化铝的质量是( )。
A．7.8g
B．9.lg
C．1.95g
D．3.9g
用括号中给出的单词的正确形式填空，使句子意思完整。
1. The Great Wall is very _____ (amaze), isn' t it?
2. The Pyramids in the World Park in the USA looked like the real _____ (one).
3. We'll walk slowly around the big lake and feel the _____ (beautiful) of the old park in the Summer Palace.
4. Our team _____ (win) the football final the day before yesterday.
5. Do you want _____ (take) some photos of the Great Wall?
