下列计算中,结果正确的是( )
A:2x2+3x3=5x5
B:2x3·3x2=6x6
C:2x3÷x2=2x
D:(2x2)3=2x6
选项
物质
杂质
除杂方法
A
CO2
CO
点燃
B
Cu粉
Fe粉
磁铁吸引
C
CaO
CaCO3
高温
D
CaCl2溶液
稀盐酸
加入足量的CaCO3,过滤
自三峡七百里中,两岸连山,略无阙处。重岩叠嶂,隐天蔽日,自非亭午夜分,不见曦月。
至于夏水襄陵,沿溯阻绝。或王命急宣,有时朝发白帝,暮到江陵,其间千二百里,虽乘奔御
风,不以疾也。
春冬之时,则素湍绿潭,回清倒影,绝巘多生怪柏,悬泉瀑布,飞漱其间,清荣峻茂,良多趣味。
每至晴初霜旦,林寒涧肃,常有高猿长啸,属引凄异,空谷传响,哀转久绝。故渔者歌曰:“巴东三峡巫峡长,猿鸣三声泪沾裳。”
A: Hi, Joe,____B: Nothing much. Why?A: I’d like to go swimming.____B: OK. I am thinking about it, too. My body is dirty. By the way,____A: I was watching TV at home.____B: I was in a shopping center with my parents. We enjoyed ourselves there.A: That sounds amazing.____ next weekend instead of watching TV.B: That’s a deal. I’ll call you then.A: That’s all right.