A:纤维素
B:麦芽糖
C:糖原
D:淀粉
—Oh, I couldn't feel . I made few mistakes in it.
读图,判断下列四种叙述中正确的是( )
①甲处为喷出岩,含有化石
②乙处为侵入岩
③甲可能是火成岩
④乙可能是沉积岩.