问题 阅读理解

阅读理解。

     In June, 2007, a group of students from eight high schools in Winnipeg, the capital of Canada's Manitoba

province, will begin test-launching (试发射) a satellite the size of a Rubik's cube.

     The one-kilogram Win-Cub satellite, named for its home city and its shape, will be put into low orbit. Once

in space, it can perform for a few months or up to several years, communicating information that could help

find the signs of earthquakes.

     There are 80 similar satellite projects worldwide, but this is the first high-school based program of its kind

in Canada. 30 Manitoba high school students are having a hand in designing and building the satellite, in

cooperation with aerospace (航空航天的) experts and 10 students from the University of Manitoba, and with

support from two other organizations.

     The Win-Cube project is not something that goes on a piece of paper; it is real-world engineering, allowing

high school students to have an opportunity to learn more about the exciting world of engineering through their

participation in this challenging program. It is also taken as a wonderful example of the unique partnerships

within Manitoba. Designing, building and launching a satellite with high-school participation will bring this world-

class educational project into reality and Manitoba closer to space.

     "These Manitoba high school students deserve congratulations for their enthusiasm, innovation (创新), and

a strong love for discovery," said Education, Citizenship and Youth Minister Peter Bjomson. "We want to make

science more relevant (相关的), interesting and attractive to high school students by showing them how

classroom studies can relate to practical experience in the workplace or, in this case, in space," Bjomson added.

     The Win-Cube program is mainly named at inspiring a strong desire for discovery on the part of the students.

It also shows Manitoba's devotion to research and innovation and the development of a skilled workforce-all

important drivers of knowledge-based economic growth.

1. According to the passage, the Win-Cube satellite is _____.

A. named after Manitoba and its shape

B. intended for international communication

C. designed like a Rubik's cube both in shape and size

D. challenged by university students around the world

2. According to Mr. Bjomson, _____.

A. those Manitoba high school students are worth praising

B. the study of space can be practically made in classrooms

C. Manitoba high schools are famous for the study of space

D. scientific research is too far away from high school students

3. The primary purpose of the project is to _____.

A. find the early signs of earthquakes

B. relate studies to practical

C. help high school students study real-world engineering

D. inspire a strong desire for discovery among the students

4. The best title for this passage may be _____.

A. Manitoba School

B. Win-Cube Program

C. Space Co-operation

D. Satellite Launching

答案

1-4: CADB

填空题

I.利用含锰废水(主要含Mn2+、SO、H+、Fe2+、Al3+、Cu2+)可制备高性能磁性材料碳酸锰(MnCO3)。其中一种工业流程如下:

已知某些物质完全沉淀的pH如下表:

回答下列问题:

(1)过程②中,所得滤渣的主要成分是                            

(2)过程③中,发生反应的离子方程式是                                     

(3)过程④中,若生成的气体J可使澄清石灰水变浑浊,则生成MnCO3的反应的离子方程式是                                                                             

(4)由MnCO3可制得重要的催化剂MnO2:2MnCO3+O2=2MnO2+2CO2

现在空气中加热460.0 g MnCO3,得到332.0 g产品,若产品中杂质只有MnO,则该产品中MnO2的质量分数是           (用百分数表示,小数点后保留1位)。

Ⅱ.常温下,浓度均为0.1 mol/L的下列六种溶液的pH如下表:

(1)上述盐溶液中的阴离子,结合H+能力最强的是                     

(2)根据表中数据判断,浓度均为0.0l mol/L的下列物质的溶液中,酸性最强的是

(填序号)。

A.HCN     B.HC1O      C.C6H5OH      D.CH3 COOH    E.H2 CO3

(3)据上表数据,请你判断下列反应不能成立的是        (填序号)。

A.HCN+ Na2 CO3=NaHCO3+NaCN

B.CH3 COOH+NaCN=CH3 COONa+HCN

C.CO2 +H2O+2C6 H5ONa=Na2 CO3 +2C6 H5OH

D.CH3 COONa+HClO=NaClO十CH3 COOH

判断题