要记录一位病人3天的体温情况，制成折线统计图较好．
故选：A．
The old couple ______ for 50 years and never once have they quarreled with each other.[ ]
A. have married
B. have been married
C. have got married
D. had married
未经验收合格的车辆，（）上道运行。
A.不准
B.严禁
C.不得
