差异化战略的风险包括( )。 A．顾客可能发现低成本的产品及差异化产品之间的价格差

区域物流平台是企业物流管理过程中需要合理控制的方面。()

构音障碍

阅读理解。

     "My kids really understand solar and earth-heat energy," says a second-grade teacher in Saugus,

California. "Some of them are building solar collectors for their energy course." These young scientists

are part of City Building Educational Program (CBEP), a particular program for kindergarten through

twelfth grade that uses the stages of city planning to teach basic reading, writing and math skills, and

more.

     The children don't just plan any city. They map and analyze (分析) the housing, energy, and

transportation requirements of their own district and foretell its needs in 100 years. With the aid of an

architect (建筑师) who visits the classroom once a week, they invent new ways to meet these needs

and build models of their creations. " Designing building of the future gives children a lot of freedom,"

says the teacher who developed this program."They are able to use their own rich imagination and

inventions without fear of blame, because there are no wrong answers in a future context. In fact, as

the class enters the final model-building stage of the program, an elected 'official' and 'planning group'

make all the design decisions for the model city, and the teacher steps back and becomes an adviser."

     CBEP is a test of activities, games and imitations that teach the basic steps necessary for

problem-solving: observing, analyzing, working out possible answers, and judging them based on the

children's own standards.

1. The Program is designed _______. 

A. to direct kids to build solar collectors

B. to train young scientists for city planning

C. to develop children's problem-solving abilities

D. to help young architects know more about designing

2. An architect pays a weekly visit to the classroom _______.

A. to find out kids' creative ideas

B. to discuss with the teacher

C. to give children lectures

D. to help kids with their program

3. Who is the designer of the program?

A. An official

B. An architect

C. A teacher

D. A scientist

4. The children feel free in the program because _______.

A. they can design future buildings themselves

B. they have new ideas and rich imagination

C. they are given enough time to design models

D. they need not worry about making mistakes

以出让方式获得土地使用权的土地进行房地产开发，满( )年未动工开发的可以收回土地使用权。

A．1
B．2
C．3
D．4

照明开关应接在中性线上。