归纳比较是学习的一种方法．下列各组的归纳正确的是

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归纳比较是学习的一种方法．下列各组的归纳正确的是（）

A：碳酸钠、碳酸镁、硝酸银都与盐酸反应，其本质都与盐酸中的氢离子有关

B：洗涤剂、汽油和炉具清洁剂均能除油污，因为都具有乳化功能

C：氮气、铁粉、生石灰均能用于保存食品，延长保质期，因为都具有稳定性

D：烧碱、熟石灰都是碱，其水溶液都能使无色酚酞试液变红

上一题下一题 0.0难度选择题更新时间:2018-06-14 07:38:53

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D

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阅读下列短文，从每题所给的四个选项（A、B、C、D）中选出最佳选项。

A

Come and see the Indian elephants and the new tigers from America. The monkeys are waiting to meet you, and the pandas from China are waiting to take pictures with you. The lovely koalas from Australia are waiting to laugh at you, and the giraffes from Africa are waiting to look down on you. The parrots want to speak to you!

TICKETS

Grown-up: $4.00 Children: Over 12 $ 2.00; Under12 $ 1.00

Opening time: 8.00 a.m.- 4.00 p.m.

Except Friday: 10.00 a.m.- 3.00 p.m.

Keep the zoo clean!

Do not touch, give food or go near animals.

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