题目内容
(请给出正确答案)
[单选题]
一Hello, Amy. Hows everything?-__.
A.How are you?
B.That’s right
C.Good to see you
D.Just SO-SO
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A.How are you?
B.That’s right
C.Good to see you
D.Just SO-SO
The passage is mainly a discussion of______.
A. the adaptations of organisms to their environments
B. the reasons why organisms have their particular shapes and colors
C. the special way of life of each living thing
D. the hows and whys of the structures of organisms
一Hello,this is Linda speaking.May I speak to Jim? —Yes,________.
A.it is
B.speaking
C.I am Jim
D.thats me
A.Purchase requisition
B.Reservation
C.Scheduling agreement
D.Request for quotation
图4-5是氢原子能级图的一部分,大量原子被激发到n=3的能级上.由于电子的跃迁氢原子辐射的光谱有N条,光子的最大能量为E,由图可知()A.N=2,E=12.1eV B.N=3,E=10.2 eV C.N=2,E=10.2 eV D.N=3,E=12.1 eV