选择最佳答句( )
A:Congratulations!
B:What a shame!
C:I know.
某地的经纬度是北纬20°,东经40°,则该地属于( )
It takes Janet about forty minutes her homework every evening.
填空
人称代词的主格在句中做____ , 是动作的____; 人称代词的宾格在句中做____, 是动作的____ .
A →①Cl2,光照 (一氯环己烷) →②NAOH,乙醇,△ →③Br2的CCl溶液