长期系统的耐力锻炼，可使心室腔的容积发生哪些变化？（）
A.增大
B.减小
C.不变
参考答案：A
单句改错
1. Finally,he reached to a conclusion that Tom wasn't the thief.
2.To conclude with,I wish you a happy new year.
3. The meeting concluded The Internationale(国际歌).
浮动盈亏
