解释加线的字(或词)。
少习吏事:____
寡学术:____
阖户启箧:____
既薨:____
普性深沉:____
复奏:____
5÷9=0.56
Research findings have shown that about 20 percent of people only 10 percent can be ____(分类) as “early birds”.
人体的生殖细胞是____和____,他们分别是由____和____产生。