蓝细菌属于（）型的微生物。
A、光能自养
B、光能异养
C、化能自养
D、化能异养
参考答案：A
we had to walk home.
A．There ere no boxed in the streets
B．Being no buses on the streets
C．It was not a bus
D．There being no buses in the streets.
胚胎期造血5周出现在（）
A.卵黄囊
B.胆囊
C.淋巴管
D.肝、脾
E.骨髓
