将左右两部分搭配,使其成为通顺的句子。
①Is she in the study?____ A. It's on the desk.
②Is this your bedroom?____ B. No, they aren't.
③Where's my pen?____ C. No, it isn't.
④Are they on the chair?____ D. Yes, she is.
⑤Where are my books?____ E. They are on the bed.
名著阅读。
下列生物中,不具有细胞结构的是( )
连一连。
关于灭菌和消毒的不正确的理解是( )