A:being translated
B:having been translated
C:to translate
D:to have been translated
蝗虫、蟹、蝉、蜈蚣、蜘蛛的共同特征是( )
“达菲”是治疗甲型H1N1型流感的有效药物,莽草酸是生产“达菲”的关键原料,它是从中药八角中提取的物质,其化学式为C7H10O5。下列叙述正确的是( )