20℃时,向一支盛有0.1g熟石灰的试管内加入10mL水,充分振荡后静置,试管底

题型:选择题

问题:

20℃时,向一支盛有0.1g熟石灰的试管内加入10mL水,充分振荡后静置,试管底部仍有未溶解的白色固体,过滤得到澄清溶液。下列对于该溶液的有关叙述中正确的是[ ]

A.该溶液是20℃时的饱和溶液       

B.该溶液中溶质的质量等于0.1g

C.该溶液中溶质的质量分数等于1%   

D.升高温度该溶液变为不饱和溶液

考点:固体溶解度饱和溶液,不饱和溶液关于溶液的计算
题型:选择题

读下图,回答下列各题:(6分)

新华网莫斯科3月22日电:中国国家 * * 习 * * 22日抵达莫斯科,开始对俄罗斯进行国事访问,双方将签署经贸、能源、投资、地方、人文、环保等领域合作文件。访问俄罗斯后,习 * * 还将对坦桑尼亚、南非、刚果共和国进行国事访问,并出席在南非德班举行的金砖国家领导人第五次会晤。

(1)习 * * 出行路线先后除亚洲外还经过了哪几个大洲?(2分)

(2)我国与习 * * 所访问的国家合作被称为            (1分)

(3)3月27日,金砖国家领导人第五次会议在南非德班举行,此时达州市          

(昼夜长短情况)。访问的最后一个国家所在地形区是               ,其所在大洲气候分布特点是                    。(3分)

题型:选择题
3.14、
22
7
3.1
-
4
3.
-
1
-
4
、π,按从小到大的顺序排列是______.
题型:选择题

按照现行规定,下列关于委托撤单的说法,不正确的是()。

A.投资者的委托在未成交前,委托人有权撤销原有委托令

B.投资者可以对未成交部分的委托申请撤单,但不得撤销已成交部分的委托

C.投资者可以对未申报的委托申请撤单,委托一经申报至证券交易所,不管成交与否,投资者都不得申请撤单

D.对委托人撤销的委托,证券经纪商应及时将冻结的资金或证券解冻

题型:选择题

第三部分:阅读理解(每题2分,共30分)

Maria is a very fast runner. She has won many races put on by the factory in Russia where she works. She was asked how she was able to stay in such good shape(体型). This was her answer.

“I’m in shape because of the way I spend my day. It begins at 5:30 in the morning. I jump out of bed to cook for my husband and iron(熨衣服) the clothes. Then I have to start running to work on time.

“I rush with a large bag in one hand and my four-year-old baby in the other. First, I stop at the school, hand my baby to the teachers, and then rush to work. After work I run back to the school to pick up my baby and then run to the market. Then I run home to start cooking supper-and then it takes time to feed them and get them all to bed. Then I start doing the washing so I can iron in the morning.

“My husband is soft because I have made life easy for him. He doesn’t hurry to and from work,and I have the table set when he gets home. He eats, puts on the television, sits down and reads the newspaper. And that’s why I’m in such good shape—and my husband isn’t.”

1.Maria is in good shape mainly because she _______.

A. goes to exercise classes          B. runs so much every day

C. has won many races             D. is a Russian

2.Maria gets up at 5:30 in the morning because ______.

A. her children wake her 

B. she has so much to do before she goes to work

C. she likes getting up early 

D. her husband wakes her

3.After work, Maria usually_________.

A. goes on with her work           B. takes her baby to school

C. irons the clothes                D. cooks supper

4.Which of the following is TRUE about Maria’s hus band?

A. He’s a badtempered man.

B. He always goes to work in a hurry. 

C. He isn’t in good shape. 

D. He cooks breakfast by himself.

5.Which of the statements is right ?

A. Maria is an American woman.

B. Maria won many races put on by the CLUB in Russia.

C. Maria has to hurry to do something every day.

D. Maria and his husand care about each other.

题型:选择题

混凝土的标号与水泥的标号实质是同一回事,都是在压力机上压出来的,仅仅是数值不同而已。( )

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