①炽热的木炭②H2S气体③Cu④FeO⑤NH3⑥蔗糖⑦CuSO4•5H2O⑧铁、铝.
A:③④
B:①②⑤⑧
C:①②③④⑦
D:⑥⑦
Mr. Simmons ________a medium build, and he has yellow hair.
甲数是乙数的倍数.甲数就是甲乙两个数的最小公倍数.