A、理解口头言语
B、理解书面言语
C、口语表达
D、书面表达
She________hernervousnesstotheimportanceoftheinterview.
A、contributed
B、dedicated
C、distributed
D、attributed
A、280nm处的吸光度增加
B、容易和RNA形成杂化双链
C、CG之间的氢键全部断裂
D、50%的DNA双链被打开
Itisusefultoscience_______theearthasanobjectinspace.
A、toconsider
B、whichconsiders
C、considers
D、theconsiderationof