2014年11月，亚太经合组织（简称APEC）会议，在北京举行。APEC会议期间的北京天空，出现了少有的清爽湛蓝。这一现象在网上引起热议，有网友将2014年APEC会议期间北京的洁净蓝天称为“APEC蓝”。平常爱关心时事的小明，对“APEC蓝”充满了好奇。下面是他在探究“APEC蓝”中搜集和整理的两则素材。现在也请你来探究与“APEC蓝”相关的问题。

发展短视的代价
工业和交通的发展，在创造财富、方便生活的同时，也造成了对人类自身发展的危害，这种短视行为是不可取的。

阅读理解

    The value-packed, all-inclusive sight-seeing package that combines the best of Sydney's harbour, city, bay and beach highlights.

    A SydneyPass gives you unlimited and flexible travel on the Explorer Buses: the 'red' Sydney Explorer shows you around our exciting city sights while the ‘blue' Bondi Explorer visits Sydney Harbour bays and famous beaches. Take to the water on one of three magnificent daily harbour cruises (游船). You can also travel free on regular Sydney Buses, Sydney Ferries or CityRail services (limited area), so you can go to every corner of this beautiful city.

    Imagine browsing at Darling Harbour, sampling the famous seafood at Watsons Bay or enjoying the city lights on an evening ferry cruise. The possibilities and plans are endless with a SydneyPass. Wherever you decide to go, remember that bookings are not required on any of our services so tickets are treated on a first in, first seated basis.

    SydneyPasses are available for 3, 5 or 7 days for use over a 7-calendar-day period. With a 3 or 5-day pass you choose on which days out of the 7 you want to use it. All SydneyPasses include a free Airport Express inward trip before starting your 3, 5 or 7 days, and the return trip is valid (有效的) for 2 months from the first day your ticket was used.

SydneyPass Fares

    *A child is defined as anyone from the ages of 4 years to under 16 years. Children under 4 years travel free.

    **A family is defined as 2 adults and any number of children from 4 to under 16 years of age from the same family.

几个铜制的质量、粗细、高度各不相同，把它们竖直放在水平桌面上，则（    ）

Here is a(n)____ ____