题目内容
(请给出正确答案)
[单选题]
“O Wind/If winter comes,can spring be far behind?” The two lines are from ().
A.“To Autumn”
B.“To a Nightingale”
C.“Ode to the West Wind”
D.“To a Skylark”
答案
查看答案
A.“To Autumn”
B.“To a Nightingale”
C.“Ode to the West Wind”
D.“To a Skylark”
第2题
This crop has similar qualities to the previous one, _______ both windresistant and adapted to the same type of soil.
A) being B) been C) to be D) having been
第3题
第5题
写出下列分子的结构式,使其符合十八电子规则:
(1)V2(CO)12;
(2)Ni2(CO)2(C¿214215¿H5)2(羰基成桥);
(3)Cr2(CO)4[C5H5]2;
(4)[Cp3Mo3(CO)5(3-S)]+;
(5)[H5Re3(CO)10]-(有2个Re—Re单键,1个ReRe双键)。