吹气和哈气都是从人口中出来的气，夏天用口“吹气”能使开水变凉，是因为吹气加快了水面上方 _____ ，从而加快了开水的 ____ ，而 ____ 吸热；冬天对着手“哈气”使手暖和，是因为哈出的水蒸气遇冷 ____ ，使手的温度升高．

The government has taken measures to ________ the high prices of daily goods to keep the market

stable.[ ]

A. take down  

B. bring down

C. hand down  

D. tear down