紫外透射仪的用途（）
A.蛋白测序
B.氨基酸测序
C.DNA测序
D.核苷酸测序
E.紫外光下看DNA条带
参考答案：E
She was knocked by a car and now is still ．
A．down; in danger
B．off; dangerous
C．down; dangerous
D．off; in danger
“徐黄异体”指的是（）。
