【简答题】I am late for work today because of the t_____ jam.
【单选题】副交感神经兴奋引起的唾液腺分泌特点是( )
【单选题】Speaker A: Sorry, I am late for school. Speaker B: __________
【简答题】Speaker A: Sorry, I am late for school. Speaker B: __________
【单选题】-What did your teacher say just now? -He asked me ________. [ ]
A.
how could I work it out
B.
when did I go to the library
C.
why I am late for school
D.
if I had get ready for the exam
【单选题】下列有关于玻尔模型的讨论,不正确的是( )
C.
玻尔模型中,电子圆周运动的向心力来源于静电作用
D.
电子从一个定态跃迁到另一个定态需要吸收一定频率的电磁波
【单选题】Speaker A: Sorry, I am late for school. Speaker B: __________
【单选题】下列有关于玻尔模型的讨论,不正确的是( )
C.
玻尔模型中,电子圆周运动的向心力来源于静电作用。
D.
电子从一个定态跃迁到另一定态需要吸收一定频率的电磁波。