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【简答题】
Agriculture was a step in human progress ________ which subsequently there was not anything comparable until our own machine age. A) in B) for C) to D) from
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反馈参考答案：
举一反三
【单选题】What ’ s the results of this practice by the supermarkets?
A.
Officials are unhappy with the result of this practice.
B.
People think that it’s of no help to charge extra money.
C.
People are now using significantly fewer plastic bags.
D.
People still leave 5,000 plastic bags a day on the beaches.
【多选题】河豚毒素的特点为:
A.
毒素主要存在于河豚鱼的内脏、血液及皮肤中
B.
以卵巢毒性最大，肝脏次之
C.
对热稳定，需220℃以上方可分解
D.
盐腌或日晒不能破坏
E.
pH＜7时可被破坏
【单选题】What's the result of this practice by the supermarkets?
A.
Officials are unhappy with the result of this practice.
B.
People think that it’s of no help to charge extra money.
C.
People are now using significantly fewer plastic bags.
D.
People still leave 5,000 plastic bags a day on the beaches.
相关题目：
【多选题】河豚毒素的特点为:
A.
毒素主要存在于河豚鱼的内脏、血液及皮肤中
B.
以卵巢毒性最大，肝脏次之
C.
对热稳定，需220℃以上方可分解
D.
盐腌或日晒不能破坏
E.
pH＜7时可被破坏
参考解析：
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