做好地震、气象、地质等工作，提高防灾减灾救灾能力。()
查看答案
One of the reasons why the long-term trend of prices bas been downwards is that__________.
A. technological innovation can promote social stability
B. political instability will cause consumption io drop
C. new farming and crop technology can lead to overproduction
D. new sources are always becoming available
微信支付 
支付宝支付