There are many scenic spots in the world. Some are the best form of architecture ever built and seen. The Great Wall, Taj Mahal, the Pyramids of Egypt and Petra     1     (actual) prove the point that architecture is an age old art and profession.

Not many people know the only piece of construction that can     2     (see) from the moon is the Great Wall of China,     3     total length built in all dynasties is 21,196.18 kilometers. It is the world’s longest man made structure.

Taj Mahal is a beautiful piece of architecture of all times, which was constructed by     4     (use) materials from all over India and Asia.     5     is believed that over 1,000 elephants were used to transport building materials. It     6     (take) the efforts of 22,000 laborers, painters, artists and stonecutters to shape Taj Mahal.

One of the best     7     (place) to experience traditional architecture is Egypt. The Pyramids of Egypt make us extremely amazed at how     8     (create) the architects in ancient times were and what efforts were made by ancient people.

Petra is another place     9     (visit) great structures. This ancient city was the capital of the Arab kingdom of the Nabateans,     10     trade center. The city is famous for water tunnels and stone structures carved in the rock.

4 . When the monthly electricity bill came home, parents always couldn’t believe their eyes, as the amount was much more than needed.     1     Here are some tips for parents to educate their children on how to save energy.

Switch off the lights. Assign one day in a week for a “turn off” practice, for a few hours. Tell the kids the significance of using less electricity and how it impacts the environment.     2    

Use energy-efficient transportation. When parents and their children are out on vacation, have a cycling outing. When the whole family rides bicycles together, it not only serves as a great bonding exercise, but it also teaches the children about eco-friendly transportation options.     3    

Play a game.     4     Engage them in a game instead. Ask the little ones to walk around the house with pen and paper, and make a note of all the equipment that consumes energy. Let them suggest what measures can be taken within the home to reduce consumption of electricity and go green. Parents can stick small notes near these appliances to give them interesting information on conservation.

    5     Create a theatre-like experience at home on a Sunday and gather everyone in the family, especially the kids, to watch an informative film about environmental issues or climate change. If parents have slightly older children, they can discuss the film and ask them what they think.

5 . The number of birds coming through your neighborhood is changing, and so is the timing of their migrations (迁徙). Birdwatchers noticing these differences are playing a big part in understanding how climate change and severe weather events are affecting bird population.

John Rowden is director of community conservation at the National Audubon Society, which aims to protect birds and their environment. He said, “Birders have to be much more alert (警觉的) to when birds are coming through than they used to be, since birds may be coming through much earlier or much later.”

Rowden said, “Birdwatchers are increasingly seeing birds in their areas that are usually found elsewhere. And they are seeing fewer of the birds that usually travel through. Although we have seen these birds, it doesn’t mean they’ll always be there. They are declining in numbers because we’re throwing so many things at them, so we need to do what we can to help them.”

“At least 314 species of American birds are expected to lose 50 percent or more of their range by the end of the century. Those species are listed by the Audubon Society as climate-threatened or endangered,” Rowden added.

Environmentalists say there are a few easy steps people can take to help struggling bird populations. These include planting native species, which leads to more native insects for the birds to eat. During spring and fall migration seasons, people can help migrating birds by keeping outdoor lights turned off and covering reflective surfaces like large windows. People also should make indoor plants less visible to passing birds.

Geoff LeBaron, director of the Christmas Bird Count at the National Audubon Society, says he has seen the effects of climate change firsthand. “I’ve been a birder since I was a little kid,” he said. “It’s clear that climate change is affecting and will continue to affect birds on a global scale, and it’s a question of whether or not they can adapt to what the climate is throwing at them.”

6 . Climate change disproportionately affects the world’s most vulnerable people, particularly poor rural communities that depend on the land for their livelihoods and coastal populations throughout the tropics. We have already seen a chain of tough suffering that results from extreme weather events, such as hurricanes, floods, droughts, wildfires, and more.

For remedies, advocates and politicians have tended to look toward cuts in fossil-fuel use or technologies to capture carbon before it enters the atmosphere—both of which are crucial. But this focus has overshadowed the most powerful and cost-efficient carbon capture technology in the world. Recent research confirms that forests are absolutely essential in reducing climate change, thanks to their ability to absorb and isolate carbon. In fact, natural climate solutions such as conservation and restoration of forests, along with improvements in land management, can help us achieve 37 percent of our climate target of limiting warming to a maximum of two degrees Celsius above preindustrial levels, even though they currently receive only 2.5 percent of public climate financing.

Forests’ power to store carbon dioxide is staggering: one tree can store an average of about 48 pounds in one year. Intact(完整的)forests could take in the CO₂ emissions of some entire countries.

For this reason, policymakers and business leaders must create and enforce policies to prevent deforestation, foster, reforestation of degraded land, and promote the sustainable management of standing forests in the fight against climate change. Protecting the world’s forests ensures they can keep performing essential functions such as producing oxygen, filtering water and supporting biodiversity. Not only does the world’s entire population depend on forests to provide clean air, clean water, oxygen and medicines, but 1.6 billion people also rely on them directly for their livelihoods.

Unfortunately, a huge amount of forest continues to be converted into agricultural land to produce a handful of resource-intensive commodities - despite zero-deforestation commitments from companies and governments. So now is the time to increase forest protection and restoration. This action will also address a number of other pressing global issues. For example, in less developed, rural areas - especially in the tropics - community-based forest-management programs can forge pathways out of poverty. In the Peten region of Guatemala, for instance, community-managed forests boasted a near-zero deforestation rate from 2000 through 2013, as compared with 12 percent in nearby protected areas and buffer(缓冲)zones. These communities have built low-impact, sustainable forest-based businesses that have stimulated the economy of the region enough to fund the creation of local schools and health services. Their success is especially noticeable in a location where, outside these community-managed zones, deforestation rates have increased 20-fold.

8 . Spectacular Waterfalls in the World

They are accessible via the Western Zimbabwe town of the same name. Though technically not the tallest (107 meters), Victoria Falls is commonly known as the largest for its rapidly falling water. Summers can be hot and too dry to see the falls in full form, making the best views between March and August.

Though Iguazu is only 82 meters tall, its curtain of water extends for over 1,600 meters. But if two stamps in your passport aren’t enough of a reason, these Falls are also considered the largest waterfall system in the world. The temperate year-round weather around Iguazu Falls only adds to its popularity.

The falls are impressively high at 99 meters but equally impressively long, stretching on for what feels like forever. While the Canadian side boasts a touristy town to spend the weekend, the American side trades mostly in natural views. For blue skies and high waterfall rainbow visibility opportunity, visit in summer. And while those making the trip in the winter shouldn’t expect the falls to freeze, they should bundle up or risk freezing themselves.

The Detian Falls is located in Daxin County of Guangxi Zhuang Autonomous Region, crossing the Sino-Vietnamese border. The roaring waterfall is separated into three-tiered falls by rocks and trees, dropping more than 70 meters. It has a maximum width of 200 meters. The waterfall is the largest naturally formed falls in Southeast Asia and has been identified as a top tourist destination.