题目

____ economy, Shanghai is already the biggest city in China. A.      At the top of     B. In exchange for          C. In terms of         D. As long as 答案：C如图是某科研小级设计的一种温度自动报警装置的电路图。当温度达到90℃时（　　）A. 电铃响，绿灯亮           B. 电铃响，红灯亮           C. 电铃不响，绿灯亮           D. 电铃不响，红灯不亮