正常分层注水井每（）测试1次，分层测试资料使用期限不超过（）月。
参考答案：4个月；5个
His whole school education ________ only half a year, because his family was very poor.[ ]
A．added up
B．added up in
C．added up to
D．was added up
运动供能的主要形式是（）
A.糖酵解
B.糖异生
C.脂肪酸氧化
D.产生酮体
E.产生乙酰乙酸
