A:由分子间作用力结合而成,熔点低
B:固体或熔融后易导电,熔点在1000℃左右
C:由共价键结合成网状结构,熔点高
D:固体不导电,但溶于水或熔融后能导电
She asked her father for ____(permit) before applying for the job.
—How many crayons do you see?—I see ____(fourteen / forteen).(14)