皮皮学，免费搜题
登录
搜题
【单选题】
下列说法中不正确的是( )A.
s键的一对电子的电子密度分布对键轴方向呈型对称
B.
p键电子云分布是对通过键轴的平面呈镜面对称
C.
s键比p键活泼性高,易参与化学反应
D.
电子的原子轨道重叠程度越大,所形成的共价键越牢固
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】It is a time for children to express love to their mothers on Mother's Day.
A.
快速的
B.
表达
C.
快递
【单选题】Look at ______ skirt. I bought it for Mum on Mother's Day. Isn't it nice? [ ]
A.
a
B.
an
C.
the
D.
/
【单选题】Look at _______ skirt, I bought it for Mum on Mother's Day. Isn't it nice? [ ]
A.
a
B.
an
C.
the
D.
不填
【单选题】If you see someone wearing a white carnation on Mother's Day, it means ______.
A.
his mother is ill
B.
his mother passed away
C.
his mother is happy
D.
his mother is living
【简答题】Mother's Day In Britain, Mother's Day falls on a few weeks / before the festival of __1__. / But it is always in the early springtime / when new plants ___2___, / and __3__ and animals are born. / In ...
【判断题】On Mother's Day, it is customary for children to bring mothers carnations.
A.
正确
B.
错误
相关题目：
参考解析：
知识点：
题目纠错 0
发布
