下列各式中,不能用同底数幂的乘法法则化简的是 [ ]
A.(x﹣y)(x﹣y)2
B.(x+y)(x﹣y)2
C.(x﹣y)(y﹣x)2
D.(x﹣y)(y﹣x)2(x﹣y)2
答案:B
Read and judge. 读下面的小对话,判断下列句子是(√)否(×)正确。
Tom: Morning! Mary!
Mary: Morning! Tom!
Tom: I like your new pants.
Mary: Thanks. But they are not pants.
Tom: What are they?
Mary: They are new jeans. What are you wearing,Tom?
Tom: I am wearing shorts,shoes, gloves and a T-shirt
Mary: Your yellow T-shirt is very nice.
Tom:Thanks.
1. It is afternoon. ( )
2. Mary is wearing pants. ( )
3. Mary's jeans are old. ( )
4.Tom is wearing a pair of gloves. ( )
5.Tom's shorts are yellow. ( )
“一条条巨龙翻山越岭,为雪域高原送来安康……”这首名为《天路》的歌曲,生动地表达了青藏高原各族人民对青藏铁路开通的喜悦之情。青藏铁路的开通 [ ]
①能够促进少数民族地区进步和繁荣 ②可以巩固民族团结和加强国防 ③有利于全国各族人民共享发展成果 ④消除了各民族发展的不平衡性
A.①②③
B.②③④
C.①③④
D.①②④