What species of dolphin is the smallest? Hector’s dolphin, Risso’s dolphin, Spinner dolphin    1    Dusky dolphin? The smallest dolphins    2    (be) Hector’s dolphins. They’re usually around four to five feet in length and 100 pounds in    3    (weigh).

And they are    4    (extreme) rare. You will only find Hector’s dolphins off the coast of New Zealand. And there’s a subspecies (亚种) of them called Maui dolphins    5    population has decreased to just a few dozen    6    (leave) in the wild. The biggest threat to Maui dolphins is when they’re caught    7    accident in the fishing industry. Disease, danger to their habitat and tourism    8    (suspect) in reducing their numbers, too.

But there’s a new eye in the sky and by that we mean a drone that aims to help Maui dolphins by locating, identifying and following them. The aircraft runs on electric and gas power. It’s estimated to cost $ 150. 000 and its aim is    9    (use) artificial intelligence technology to keep    10    eye on the 63 adult Maui dolphins that are still alive.

In a world that is full of different kinds of colors, red quite stands out. In China, people call this color China Red,     1     has become a quite popular expression     2     (catch) the world’s attention.

This expression fully shows Chinese people’s special love for red. So why are the Chinese really fond of it? One reason     3     (lie) in the color’s rich meaning in Chinese history and     4     (tradition) culture. In ancient China, red     5     (regard) as a symbol of health, energy, happiness, hope and so on. Now red things can be     6     (common) found across the nation, for example red lanterns. People can find red lanterns across China, especially during     7     (festival) and holidays. During the Spring Festival, people will see red lanterns hanging on     8     front gates of houses and stores, trees, etc. Besides red lanterns, things     9     Spring Festival couplets (对联) and invitations are also often red.

In a word, red is popular in China and it’s more than just a color. It carries the rich culture of this nation. And you’re welcome     10     (feel) and discover it in China.

The Summer Palace is China’s largest garden ever built. Covering     1     area of 2.9 square kilometers, three quarters of which is covered with water, the palace is made up     2    over 3,000 ancient structures.All the Summer Palace     3    (spread) across the low hills and lakes among which the Longevity Hill, and the Kunming Lake are the most important     4     (part). Travelers visiting the site today have the opportunity     5     (wander)in the wonderful buildings and courtyards beside the lake and along the waterways.

When    6     (visit) the Summer Palace, visitors should plan between two hours to half a day because the site is really huge. Indeed, there are many things to see     7     you will feel time flying quickly, realizing how life was spent     8    (smooth)for emperors during their summers,for example,riding a little boat for seeing the lake areas, or watching a       9    (tradition) Chinese dance performance at the Palace’s Theatre. The Summer Palace is the place     10     travelers experience different activities and the loveliest scenic spot in Beijing city.

More than a fifth of all reptile species (爬行动物) are threatened with extinction, which could have    1     destructive impact on the planet, a new study warns. Fifty-two experts analysed data from the Global Reptile Assessment, which, in the past 17 years,     2     (receive) contributions from more than 900 scientists across six continents.

Although many reptiles live in dry    3     (environment) such as deserts and scrubland, most species occur in forests,     4     they suffer from threats such as logging and conversion of land for agriculture. Hunting is also a major threat to reptiles, especially turtles and crocodiles (鳄鱼), many of which are    5     risk of extinction. Another major factor that     6     (contribute) to forming the threat is the introduction of invasive (入侵的) species.

The study is not all depressing. Scientists noted that conservation efforts to help other animals are likely to be protecting reptile species as collateral (抵押品). “We found, surprisingly, that if you set out    7     (protect) places where birds, mammals (哺乳动物) and amphibians (两栖动物) under threat live together, you’ll protect many more    8     (threaten) reptiles at the same time, ” said Bruce Young, co-leader of the study.

Yet reptiles also require direct,     9     (globe) efforts to protect them, said Cox. Governments will negotiate (议定) new targets to protect biodiversity,     10     (include) reptiles, in Kunming, China, later this year.

Hua Weiguang,     1     retired teacher from Tongliao, Inner Mongolia Autonomous Region, is a photography enthusiast.

A decade ago, the arrival of tree planters     2     (catch) Hua’s attention and the photos of the tree planters     3     (take) by Hua are evidence of the     4     (remark) transformation of the land. In those photos, hats, scarves and goggles, for the workers fighting desertification, are basic necessities to protect them     5     the wind and sand. There was no way to avoid the brutal summer heat in the land so the workers had to lie down on the ground or curl up in the narrow shade of their cars to cool off. And they also had to eat their lunch amid the blowing sands, taking in the small pieces of sand with their food.

“    6     we don’t fool the tree, it won’t fool you. You take it     7     (serious), and then it behaves in the same way to you. You put efforts to make it live, and the tree lives up to your     8     (expect),” the planters say.

China’s forest resources have increased by over 70 million hectares in the past decade,     9     (rank) first in the world. One tree after another, a green Great Wall has been built. Brush by brush, a green field     10     (paint) over the yellow sandy land up to now.

Many people have realized that the whole world is being influenced by the change of the weather-making different places    1    (hot) than before. We    2    (experience) record-breaking high temperatures for more than a month so far. We are talking about temperatures above 40℃, which has a risk to life from heatstroke (中暑). We should pay attention    3    such a bad change to weather patterns.

With the whole world’s weather change likely to become more common in the future, we need to find    4    much better way to deal with possible unexpected events. Let’s start with    5    everyone can do to live in overheated places. We should all learn to walk on the shady part of the street. We’d better wear loose-fitting clothes made of cotton. At home, we need to keep the curtains, blinds or shutters (百叶窗)    6    (close). In this way, we can avoid    7    (have) sunlight warm the place    8    (direct). Of course, drinking enough cool water is also necessary during hot conditions. Larger social changes are also useful. People can choose to start    9    (they) work fairly early in the morning before the worst of the day’s heat really kicks in. Offices and shops can often close over these extra-hot    10    (hour). That is good for dealing with special high temperatures.

Located in southwest China’s Sichuan Province, the Jiuzhai Valley runs more than 50 kilometers, towards the Sichuan Basin. The Jiuzhai Valley got     1    (it) name because there are nine Tibetan villages in the valley. It consists of three main valleys,    2    form a “Y” in shape. The clear mountain lakes, splendid waterfalls, colorful forests and the local ,Tibetan, ethnic culture all make it a unique tourist    3    (attract).

More than 400 million years ago, the region was    4    ideal breeding ground for various, prehistoric lifeforms. However, with the time    5    (pass), many lifeforms died off. Now the region is home    6    nationally protected animal species and 74 endangered plants. Historically, the ancestors of the Jiuzhai Valley    7    (be) from the remote Ngari region in Tibet. Today, the local people still maintain their Tibetan religious and folk customs.

In 1978, the Jiuzhai Valley    8    (name) as the Jiuzhai Valley Nature Reserve, becoming the first nature reserve     9    (protect)landscape and natural scenery in China.

Now a network of wooden walkways has been built to provide a     10    ( powerful) protection to the natural environment than before.

From dunes (沙丘) and stone paintings     1     cliffs and towers, Moab is     2     dream for the adventure travelers.     3    (locate) in the heart of the Colorado Plateau, this small city in southeast Utah is one of North America’s greatest outdoor recreation     4    (center).

Millions of years of erosion by ancient oceans, freshwater lakes, streams and windblown sand dunes     5    (shape) the sandstone arches (拱桥), mountain peaks, rock formations     6     canyons here.

Mountain bikers, hikers, campers, climbers and off-road drivers arrive here     7    (explore) this red rock playground. There are more than 3 million visitors     8    (annual), a figure that     9    (increase)sharply since the start of the COVID-19 pandemic. Visits to arches grew 8.8 percent between 2019 and 2021; visits to Canyon Lands — the     10    (large)and more remote of the two national parks — increased a huge 24.2 percent, according to the National Park Service(NPS).

The Tianshan Tuomuer Grand Canyon is about 25 kilometers long from east to west and 20 kilometers wide from north to south. It consists of three main     1     (valley) in the shape of the Chinese character “川”.     2     (situate) in the northwest of Xinjiang at the foot of Tuomur Peak, it is also known     3     “Kuduluk Grand Canyon”,     4     means “thrilling and mysterious” in Uygur (维吾尔语). It is the only way to the ancient post road in the northern and southern Tianshan Mountains.

On June 21, 2013, the Tianshan Mountains in Xinjiang     5     (list) as a UNESCO World Natural Heritage Site. The area in which the Tuomur Grand Canyon lies is the     6     (large) among the four places in the Tianshan Mountains,     7     (account) for 59.87 percent of the whole site.

With its red canyons set against the snow-capped mountains in the distance, the dreamlike landscape     8     (complete) makes visitors lost in the beautiful and impressive view of nature. At night, you can see the stars. Remember that the temperature difference there is very large. While wearing short sleeves at noon, evenings may require     9     down jacket and other warm clothes. There is no tour bus service, but visitors can drive to the canyon by     10     (they) or hire a bus. Apart from it, Xinjiang is in possession of many appealing tourist spots, attracting a good number of visitors at home and abroad.