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【简答题】
(1) ___________ to the left, and you will see the bus stop. (2) ___________ to the left, you will see the bus stop. (turn)
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皮皮学刷刷变学霸
举一反三
【单选题】What do Republican opponents think of Mr. Obamas plan?
A.
They think it will cause class warfare.
B.
They believe it may increase the deficit.
C.
They guess it will spread evenly.
D.
They wish it may reduce the deficit.
【单选题】--- Have you received Jack’s plan? --- Yes, but I don’t think his plan is ______.
A.
worth being considered
B.
worthy to be considered
C.
worthy of considering
D.
worth to be considered
【单选题】关于共价键的性质,下列说法正确的是?
A.
两原子互相接近时，原子轨道叠加只能形成成键分子轨道。
B.
两原子间形成共价键后，原子外侧的电子云密度增加。
C.
成键的分子轨道能量高于原子轨道能量
D.
形成共价键后，原子间的电子云与原子核的吸引力增强
【单选题】I don’t think the plan will _______, for it is short of consideration of the workforce, _________ it? [ ]
A.
do; won’t
B.
work; will
C.
make; isn’t
D.
go; is
【单选题】—How do you deal with their objections to our plan？ —I think we can safely ______them since our plan is made on a scientific basis.
A.
approve
B.
dismiss
C.
distribute
D.
disgust
【多选题】( 双选题 ) 下列关于共价键的说法正确的是 ( )
A.
．所有共价键都具有方向性
B.
． N 原子与 H 原子不能形成 NH 4 分子，这是由于共价键的饱和性决定的
C.
． HCl 气体溶于水时，共价键被破坏
D.
．共价键的形成本质是自旋状态相同的未成对电子形成共用电子对
【单选题】– What do you think of this business plan? -- _______________.
A.
Excuse me.
B.
I think it’s perfect.
C.
Very well.
D.
That’s fine.
【单选题】关于离子键、共价键的下列说法中正确的是( )
A.
CaCl 2 中既有离子键又有共价键
B.
非极性键只存在于双原子的单质分子(如Cl 2 )中
C.
在共价化合物分子内,一定不存在离子键
D.
由多种元素组成的多原子分子里,一定只存在极性键
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