北朝时有一位女扮男装替父从军的女英雄她是谁？
参考答案：
花木兰
具有100个碱基对的1个DNA分子区段，内含40个胸腺嘧啶，如果连续复制两次，需游离的胞嘧啶脱氧核苷酸[ ]
A．60个
B．80个
C．120个
D．180个
The children like to ______ the new English teacher, who has a noticeable manner of walking.
A．take out
B．take over
C．take down
D．take off
