A. I'm fine.
B. It's the ABC song.
C. Thank you.
D. It's my leg.
E. It's black.
“父亲终于把表盖上了。”改成被字句是“表被父亲盖上了。”( )
对生物膜结构的探索经历了漫长的历程，下列结论（假说）错误是（ ）
