A:金刚石>晶体硅>碳化硅
B:CF4>CCl4>CBr4
C:NH3>N2>H2
D:纯镁>镁铝合金>纯铝
—She only got home a short while ago.
—But we were not ready for that at that time.
看拼音,写词语。
xiǎo tǐng
cāo zòng
jiāo chā
cù yōng
____
gù dìng
qiáo liáng
tíng bó
zuǒ guǎi yòu guǎi
dǎo gào