他的眼里是不是闪过一丝讥讽？Was there a glint of mockery in his eyes?他们讥讽着，喊叫着，打破了惯常的那一分钟沉默。They interrupted the customary one minute's silence with jeers and shouts.“你可得做得比那好，”乔安娜讥讽地说。"You'll have to do better than that," J...
B . Fraternal Twins Fetuses may be of different sex.异卵双胞胎可能性别不同.The resulting fetuses consisted of either mostly paternally or mostly maternally expressed genes.这样产生的胎儿要么主要是父方的基因表达,要么主要是母方的基因表达.Results CCD and TCD of Nor...