题目

完形填空 Frank1a good friend. His name is Paul. They like2.Frank thinks baseball is3.He likes baseball. Paul4to play tennis. He thinks tennis5relaxing. They6play soccer. They think it's difficult. Frank7watch TV. He thinks it's boring. Paul8a computer game. He likes to play it. Frank and Paul9volleyball. They10to play volleyball at school. （1） A . have B . has C . is D . are （2） A . an sport B . sports C . a sporting D . an sporting （3） A . boring B . difficult C . interesting D . not 下列有关除去杂质（括号内为杂质）的操作中错误的是（        ） A. 苯（苯酚）：加浓溴水后，过滤              B. 乙烷（乙烯）：催化加氢C. 乙酸乙酯（乙酸）：加饱和碳酸钠溶液后，分液 D．乙醇（水）：加新制生石灰,蒸馏