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【简答题】
醛和酮都含有______________基,它与一个H相为______________基,与两个H相为______________,与两个甲基相为______________。饱和一元脂肪醛的通式为______________,饱和一元脂肪酮的通式为______________,相同碳原子数的醛和酮互为______________。
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举一反三
【简答题】型深是指: I、在船长中点处,沿船舷由一板龙骨上缘量至上层连续甲板横梁上缘的垂直距离;II、在船长中点处,沿船舷由平板龙骨上缘量至上层连续甲板下缘的垂直距离;III、在船长中点处,沿船舷由平板龙骨下缘量至上层连续甲板下缘的垂直距离(204092:第01章 船舶常识) (A-0,B-0,C-0,D-0,错误-0)A. I、II、 B、I、IIIC、II、IIID、I、II、III
【单选题】She is often laughed at ________ her classmates because of her laziness.
A.
with
B.
by
C.
to
D.
from
【单选题】He was often laughed at for dreaming of making a _________.
A.
wealth
B.
fortune
C.
money
D.
point
【单选题】型深是指( )I.在船长中点处,沿船舷由平板龙骨上缘量至上层连续甲板横梁上缘的垂直距离;II.在船长中点处,沿船舷由平板龙骨上缘量至上层连续甲板下缘的垂直距离;III.在船长中点处,沿船舷由平板龙骨下缘量至上层连续甲板下缘的垂直距离
A.
I.II
B.
I.III
C.
II.III
D.
I.II.III
【简答题】A．He has just bought a property there. B．His rich uncle asked him to take care of his property there. C．He has been left a big fortune there. D．He wishes to make a fortune there one day.
【简答题】What he did in the "just a bit of fun" has now earned a p______ in the Guinness Book of Records.
【单选题】He often thinks out some _____ ideas so he is often laughed at by others. [ ]
A.
important
B.
necessary
C.
strange
D.
ridiculous
【单选题】— _____ is the sweater? — It's $ 100. [ ]
A.
How much
B.
How many
C.
How long
D.
How often
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