可燃气体的燃点越低,则危险程度越()。
A、低;
B、高;
C、不受限制;
D、没有影响
参考答案:B
At the foot of the mountain ______.
A.a village lie
B.lies a village
C.does a village lie
D.lying a village
一个单元格所对应的列字母与行号即为该单元格的地址。