问题 选择题

将一定质量的锌粉与100 mL 18.5 mol·L-1的浓H2SO4混合,充分反应后锌完全溶解,生成了标准状况下的混合气体33.6 L(设浓H2SO4的还原产物只有SO2,稀硫酸只生成H2),将反应后的溶液稀释成1L时,溶液pH=1,参加反应的锌为 (   )

A.0.9 mol

B.1.2 mol

C.1.5 mol

D.1.8 mol

答案

答案:C

由反应式:Zn+2H2SO4(浓)====ZnSO4+SO2↑+2H2O,Zn+H2SO4====ZnSO4+H2↑,不论生成SO2还是H2,Zn的物质的量都与气体的物质的量相等。

故n(Zn)=n(气)=="1.5" mol。

阅读理解

Charles Blackman: Alice in Wonderland

An Exhibition at the National Gallery of Victoria (NGV), Australia

10 June—12 August 2013

Venue(地点)   The lan Potter Centre

Admission     Free entry

Charles Blackman is famous for his beautiful painting of dreams. In 1956, he heard for the first time Lewis Carroll’s extraordinary tale of Alice in Wonderland—the story of a Victorian girl who falls down a rabbit hole, meets a lot of funny characters and experience all kinds of things. At that time, Blackman’s wife was suffering from progressive blindness. The story of Alice moving through the strange situations, often disheartened by various events, was similar to his wife’s experiences. It also reflected so much of his own life. All this contributed to the completion of the Alice in Wonderland paintings.

Illustrator Workshop

Go straight to the experts for an introductory course in book illustration(插图). The course includes an introduction to the process of illustration and its techniques, workshop exercises and group projects.

Dates  Sunday 17June & Sunday 5 Aug. 10 am—1 pm

Venue  Gas Works Arts Park

Wonderful World

Celebrate the exhibition and Children’s Book Week with special activities just for the day, including a special visit from Alice and the White Rabbit.

Date   Sunday 24 June, 11 am—4 pm

Venue  Exhibition Space. Level 3

Topsy-Turvy

Visit the exhibition or discover wonderful curiosities in artworks in the NGV Collection and make a magic world in a box. Alice and the White Rabbit will be with you. Walt Disney’s Alice in Wonderland will be screened.

Dates  Sunday 8,15,22,29 July, and Tuesday 24—Friday 27 July, 12 noon—3 pm

Venue  Theatre, NGV Australia

Drawing Workshop

Distortions of Scale(比例失真)can make artworks strange but interesting. Find out how Charles Blackman distorted scale in his paintings to create a curious world, then experiment with scale in your own drawings. More information upon booking.

Date   Friday 27 July, 10:30 am—3 pm

Venue  Foyer, Level 3

小题1:Charles Blackman’s paintings come from      .

A.his admiration for Lewis Carroll

B.his dream of becoming a famous artist

C.his wish to express his own feelings

D.his eagerness to cure his wife’s illness小题2:Which two activities can you participate in on the same day?

A.Illustrator workshop and Wonderful World.

B.Illustrator workshop and Drawing Workshop.

C.Wonderful World and Topsy-Turvy.

D.Topsy-Turvy and Drawing Workshop.小题3:To understand the Alice in Wonderland paintings, you should go to       .

A.Exhibition Space. Level 3

B.Gas Works Arts Park

C.Theatre, NGV Australia

D.Foyer, Level 3小题4:Activities concerning children’s books are to be held       .

A.on June 24

B.on July 15

C.on July 24

D.on August 5

单项选择题