单项选择题

角果是由1心皮发育而成的果实，具有边缘胎座，胎座向中央延伸形成假隔膜，将子房分成二室。

A．对
B．错

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单项选择题

列当是一种寄生性种子植物主要为害酸枣等木本药用植物。（） A. 对 B. 错

Seven Tips for Writing an Effective Materials and Methods Section in Your Research Manuscript
1. Begin writing the Materials and Methods w_____ you are performing your experiments.
Writing during the research process will prevent you from forgetting important details and save you time when you begin writing the full manuscript. You can also ask co-authors who performed specific experiments to write the corresponding parts of the Methods section.

答案： when##%_YZPRLFH_%##while