肺炎双球菌侵入人体气管及支气管上皮黏膜,引起咳嗽,肺炎双球菌营养方式为[ ]
A.寄生
B.腐生
C.自养
D.三者均不是
答案:A
The oil price has _______ a lot these days because of the war .
A.gone back
B.gone up
C.gone over
D.gone out