下列常见物质不能形成溶液的是 A.菜籽油 B.食盐 C.乙醇 D.蔗糖

题型:选择题

问题:

下列常见物质不能形成溶液的是

A.菜籽油

B.食盐

C.乙醇

D.蔗糖

考点:溶液的定义、组成及特征溶解过程中的放热和吸热乳化和乳化作用悬浊液、乳浊液
题型:选择题

Sally’s father is ill in hospital. and her mother has to look after her father there The woman can’t leave their four-year-old son Harry at home. So she asks Sally, “How many classes do you have this afternoon?”

“We have no classes today,” answers the girl. “We’re having a school sports meeting today.”

“That’s great!” says her mother. “Take your brother to your school. Tell your teachers I have a lot of things to do. I’m sure they can let you look after him today.”

Sally does what her mother says. This little boy comes to school for the first time and thinks everything is interesting. He sees some children having a race and asks. “What are they running for, Sally?”

“The first one can get a prize.” answers Sally.

“Now, I see. But why are the others running?”

小题1:Where is Sally’s father?

小题2:Who will take care of Sally’s father?

小题3:How old is Harry?

小题4:Does Harry often go to school?

小题5:Why does Sally take her brother to school today?

题型:选择题

人脑对直接作用于感觉器官的事物整体的反映,对感觉信息的组织和解释过程,称为()
看见一面红旗,这种心理活动属于()

A.视觉

B.感觉

C.表象

D.知觉

E.认知

题型:选择题

具有城市用水意义的地下水,主要是()。

A.滞水

B.承压水

C.二滞水与潜水

D.潜水与承压水

题型:选择题

— It is said that Mr Jin was elected headmaster of the new school.

— He is _____ hardworking that it is no surprise for him to get ______ post.

A.so a, such

B.so, such a

C.such a, so

D.such, so

题型:选择题

两部制定价中固定费的存在会将一部分潜在的用户排除在市场之外,因此损失一部分社会福利。

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