皮皮学，免费搜题
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【简答题】
补全对话。 A:Hi, Jack. How l your vacation? B:It was pretty good. A:Where did you _ 2 ? B:I went to Beijing 3 my parents. A: 4 did you go there? B:We 5 _ there by train. A: 6 did you do? B:We visited Tian'an Men Square. There 7 _ many people there. A:How were the people? B: 8 were very friendly. A:How was the 9 ? B: 10 was sunny and cool.
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】下列氮肥中不属于铵态氮肥的是（ ）
A.
尿素CO（NH 2 ） 2
B.
碳铵NH 4 HCO 3
C.
硝铵NH 4 NO 3
D.
肥田粉（NH 4 ） 2 SO 4