Leonardo da Vinci began painting the Mon

题型:阅读理解

问题:

Leonardo da Vinci began painting the Mona Lisa in 1503. He was working on an important painting for a church at the time, but the church painting was not going well. An Italian businessman asked da Vinci to paint a picture of the businessman’s second wife. This is the woman who can be seen in the Mona Lisa.

All in all, the Mona Lisa is a very good example of da Vinci’s work. Da Vinci uses darkness and light in a clever way in the painting.

Da Vinci loved science and math. Right away a person can see that there is a lot of geometry (几何) in the Mona Lisa. The face of Mona Lisa is made of many circles and round shapes like balls. Even her smile can be seen as a small part of a large circle.

The woman in the painting is sitting on a balcony, and mountains can be seen behind her. Da Vinci loved to study rocks and mountains, so these can be seen over and over again in his other paintings.

The woman is sitting with her knees to the side. Her head is turned to look out of the painting. Her hands are held together in front of her. This way of sitting is now used by many artists when they are painting a picture of a man or woman today.

小题1:Who painted the Mona Lisa?

A.A businessman.

B.The second wife.

C.A man in the church.

D.Da Vinci.小题2:The woman in the painting is           .

A.standing in a garden

B.sitting on a balcony

C.standing in front of her house

D.at the foot of a mountain小题3:Da Vinci loved to study all of the following things except            .

A.the way people sit

B.science and math

C.mountains

D.rocks

考点:人物传记类阅读故事类阅读
题型:阅读理解

限定性集合资产管理计划投资于股票等权益类证券以及股票型证券交易的资产,不得超过该计划资产净值的()。

A.10%

B.20%

C.30%

D.40%

题型:阅读理解

我国推广使用的加碘食盐中加入的是碘酸钾(KIO3)。碘酸钾中碘元素的化合价为(   )

A.+1

B.+3

C.+5

D.+7

题型:阅读理解

将2molSO2和1molO2混合置于容积为2L的密闭容器中,在800K时,发生如下反应:2SO2(g)+O2(g)⇌2SO3(g)△H<0,当反应从开始进行到5min时,反应达到平衡状态,测得混合气体总物质的量为2.1mol.请回答下列问题:

(1)800K时,该反应的平衡常数为______,在0~5min时间间隔内SO2的反应速率为______.

(2)若在5min时降低温度,在某一时刻重新达到平衡状态,则新平衡混合物中气体的总物质的量______2.1mol(填“>”、“<”或“=”),简述你的判断理由:______.

(3)若相同条件下,向该容器内分别充人xmolSO2、ymolO2和zmolSO3,反应达到平衡时,容器内混合气体总物质的量仍为2.1mol.则:x、y、z必须满足的关系是______.(一个用含x、z的式子表示,一个用含y、z的式子表示)

(4)相同条件下,若在上述容器中,充入0.2mol SO2、0.4mol O2和4.0molSO3三种气体,下列对该反应状态的描述中,正确的是______(填字母序号).

A.处于平衡状态  B.不是平衡状态,反应正向进行 C.不是平衡状态,反应逆向进行.

题型:阅读理解

在半导体存储器中,动态RAM的特点是( )。

A.信息在存储介质中移动

B.按字结构方式存储

C.按位结构方式存储

D.每隔一定时间要进行一次刷新

题型:阅读理解

体细胞突变主要发生在( )

A.B细胞发育阶段
B.T细胞分化阶段
C.成熟T细胞阶段
D.B细胞介导免疫应答阶段
E.淋巴样造血干细胞阶段

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