A:
B:
选出不同类的单词
①____A. sun B. moon C. swing D. star
②____ A. blue B. bright C. yellow D. red
③____A. bag B. small C..big D. bright
④____A. evening B. morning C. moon D. afternoon
⑤____ A. table B. bowl C. desk D. chair
怎样算简便就怎样算.
3.3÷0.25×(17.3+30.7)=____