乙烯生物合成的直接前体为()。
A.ACC
B.AVG
C.AOA
D.蛋氨酸
参考答案:A
根据句意及首字母或汉语提示完成句子。
1. There's no money in the w______.
2. Every weekend, my parents take me to the Children's P______.
3. Who is the____ (国王)of the England now?
4. Last night I saw an interesting talk ______ (节目)。
5. I don't like this_________ (老虎)because it's very ugly.
公安机关通过侦查,破案以后就意味着侦查的结束。( )