下列计算正确的是…………………………………………………………

下列计算正确的是………………………………………………………………(      )

A.   B.   C.   D.

 

答案

B

 解析:略

 

相关题目

如果说英国资产阶级革命宣告资产阶级君主立宪制的诞生是
如果说英国资产阶级革命宣告资产阶级君主立宪制的诞生是人类一个重大进步的话,那么美国独立战争推动了人类历史继续发展的最大贡献是(    )A
Some people don’t believe that driving more slowly can save lives. But the tru
Some people don’t believe that driving more slowly can save lives. But the truth is that driving more slowly can help a person to avoid serious accidents. The following chart shows the distance that
鸡的胚胎发育过程中爪之间存在蹼状物,但破壳而出的小鸡
鸡的胚胎发育过程中爪之间存在蹼状物,但破壳而出的小鸡爪之间没有蹼状物,这说明(    ) A.细胞凋亡在胚胎时就存在 B.鸡和鸭的遗传物质相同 C.后
用一个2倍的放大镜照一个ΔABC,下列命题中正确的是(    
用一个2倍的放大镜照一个ΔABC,下列命题中正确的是(     )A.ΔABC放大后角是原来的2倍       B.ΔABC放大后周长是原来的2倍C.ΔABC放大后面积是原
--- Does your sister work in the company? --- No, not now. But she ______ ther
--- Does your sister work in the company? --- No, not now. But she ______ there for 8 years. A. has worked         B. worked                 C. had worked                   D.
依次填入下面横线处的词语,恰当的一项是( )        成
依次填入下面横线处的词语,恰当的一项是( )        成熟的麦穗在阳光下低垂着头,那是在教我们________;忙碌的蜜蜂在田野里采集花粉,那是在教
如图,在一个标准大气压下,某同学将冰块放人空易拉罐中
如图,在一个标准大气压下,某同学将冰块放人空易拉罐中并加入适量的盐,用筷子搅拌大约半分钟;测得易拉罐中冰与盐水混合物的温度低于0℃,实
 She _______ this book for nearly three weeks.   A. has borrowed       B
 She _______ this book for nearly three weeks.   A. has borrowed       B. has lent          C. has bought        D. has kept

最新题目