A：生长素
B：赤霉素
C：脱落酸
D：乙烯
解下列方程：
（1）x（x﹣1）+2（x﹣1）=0；
（2）x2+1.5=3x．
—Yes. We had a great time there.
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
