科学家根据图甲的研究装置揭示的原理发明了_1机；如图乙，在做托里拆利实验时，当玻璃管倾斜，测得管内水银柱的长度是760mm，则此时外界大气压_2一个标准大气压．（填“大于”、“等于”或“小于”）

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科学家根据图甲的研究装置揭示的原理发明了 ____机；如图乙，在做托里拆利实验时，当玻璃管倾斜，测得管内水银柱的长度是760mm，则此时外界大气压 ____一个标准大气压．（填“大于”、“等于”或“小于”）

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发电,小于

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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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