对垃圾取样进行有机组分分析的结果见下表,请确定垃圾中有机组分的化学组分表达式(考虑 C 、 H 、 O 、 N 、 S )
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【简答题】用be动词的适当形式填空。 1. What _____ your name? 2. My telephone number _____ 2746598. 3. This _____ my ID number. 4. My family name _____ Black. 5. Helen and Gina _____ girls.
【简答题】用所给词的适当形式填空。 1. This __________ ( be ) my bag and these are my __________ ( pen ). 2. They ___________ ( be ) my friends> 3. --- What's this? --- It's _________ ( a ) arm. 4. --- What __________ (be )...
【简答题】用所给单词的适当形式填空完成句子。 1. My father's sisters are my _____ (aunt). 2. Jim and Dave are my _____ (cousin). 3. This is Jack. _____ (he) father is my uncle. 4. John, these are my _____ (friend). 5. Are _____ ...