艾滋病是由什么病原体感染所致()
A.人类多瘤病毒
B.巨细胞病毒
C.人类免疫缺陷病毒-2(HIV-2)
D.人类免疫缺陷病毒-1(HIV-1)
E.麻疹缺陷病毒
参考答案:D
The father advised her to avoid the mistake made by many couples of marrying for the wrong reasons()he found the young man charming and intelligent.
A.as though
B.even though
C.because of
D.due to
油气从油气源层向储集层的支移阶段称为()油气进入储集层后,在储集层内作侧向运移,以及穿层作垂向运移称为()油气在储集层内适当圈闭中形成油气藏的过程为()。