The old man lives in that village house by himself, "by himself" probably means
A:alone
B:lonely
C:sadly
____
用计算器算出:18千克大米的总价是____元.
用计算器算出:9.5千克大米的总价是____元.
用计算器算出:26千克大米的总价是____元
下列句子没有语病的一项是( )
直线y=2x+1的参数方程是 ( )
春秋时期,齐国书生张忠前往鲁国拜道家学派创始人孔子为师。