用冻结法砌筑的墙应待其解冻后，而室内温度应保持在（）℃以上，方可进行室内抹灰。
A．0
B．＋5
C．＋3
D．＋10
参考答案：B
A new survey released by Yale University finds that Americans trust scientists most when ______ comes to information on climate change．
A．that
B．it
C．this
D．there
用字母表示乘法分配律（a+b）×c=______．
98×37+37×3-37=______×37=______．
