我国天然气储备建设刚刚起步，储备规模不大，全国储气量不到天然气消费总量的（）。
A.1%
B.3%
C.5%
D.7%
参考答案：B
根据释义词首字母写出单词。
1. i have a favourable effect on sb.; make sb feel admiration and respect
2. i cause sth. to become better
3. a in a voice loud enough to be heard
4. f annoying; discouraging
5. c having all its parts; whole
胃酸的主要成分是什么？用什么来中和胃酸？
