阅读下面短文, 根据短文内容, 从短文后各题所给的A、B、C、D四个选项中, 选择最佳选项。

C

    A desert is a difficult place for animals to live, and some have unusual ways of making a living. The Texas lizard has a strange way to keep itself safe. When a predator(掠食动物) gets too close, blood goes out from the lizard's eyes. Then it breathes in much air to make its body look bigger. Another interesting desert animal is the javelina. To make a predator afraid and run away, the javelina bravely faces the animal. It makes a big noise with its teeth. It raises the hard hairs on its back to make itself look bigger. The javelina also gives off a strong smell as a warning when it is afraid. This smell is so strong that javelinas are also called "smelly pigs". Javelinas keep safe by staying close to their family, so there's a good chance they can make a predator change its mind!

    You might think a rain forest would be easier to live in than a desert. After all, there's plenty of food and water in a rain forest. But that also means a lot of animals live there. Being able to climb trees is a useful skill in the rain forest. It allows an animal to keep away from predators. The sloth spends most of its life in the treetops. Its strong, curved claws(爪子) help it climb and hang upside down from branches. The sloth also moves very slowly. It does this so it's not noticed. The aye-aye lives only in the rain forest of Madagascar, near Africa. The aye-aye is a night animal. This helps it to stay safe from daytime predators. However, the number of the aye-aye keeps going down and they may die out. People have hunted it because they think it brings bad luck. Also, much of the rain forest in Madagascar has been cut down, which has destroyed the aye-aye's home. Today there are laws(法律) to keep people from killing it.

    My parents often take me to the zoo at weekends. I like animals. I have many toy animals in my room. In the zoo I can see tigers, elephants, pandas and many other animals. Some animals are friendly, but some are not. Tigers, lions and snakes are dangerous. That is why they have to be in the cage. But I think it is terrible for animals to be in the cage.

    Tigers usually live in forests and mountains. They can run. They catch and eat small animals, but now they live in small rooms. They can only walk and sleep in the cages, and they want to go out. I feel sorry for them.

    I think my favourite animals are dolphins. I like watching them swim and jump. They can play with a ball. They can "walk" on the water! They are very friendly to people. They can help you when you fall into water and can't swim.

Have you even seen fireflies(萤火虫)?Fireflies are small insects. You can't see them{#blank#}1{#/blank#} any season except summer. The lights made by fireflies are probably one of the most magical things to see on a summer night. Do you wonder{#blank#}2{#/blank#} fireflies make this light?

There is a part that can make light under a firefly's stomach. Fireflies take in air and{#blank#}3{#/blank#}

(useful) it to produce light with special cells (细胞).Different kinds have {#blank#}4{#/blank#}(they) own special flash patterns, just like humans have different languages. They use these flash patterns to find other members of their group.

Fireflies {#blank#}5{#/blank#}(main) use the light to get friends' attention. The males (雄性) fly around while{#blank#}6{#/blank#}(turn) their lights on and off, hoping to get the attention of a female (雌性).They try to flash very quickly, because the {#blank#}7{#/blank#}(fast) males flash, the more attention they can get from females. Fireflies also use the light to make their {#blank#}8{#/blank#}(enemy) scared.

If you haven't seen many fireflies lately, you are not alone.{#blank#}9{#/blank#} number of fireflies may be dropping because of some reasons, such as light pollution and chemical medicine use. Another important reason is that fireflies' living places are destroyed by humans.{#blank#}10{#/blank#}(luck), Chinese scientists recently found three new firefly kinds in Yunnan. Yunnan might have the right environment for these magical insects to live in.

Robots are helpful to people's lives.They are able {#blank#}1{#/blank#}(help) people with a lot of housework. Also, they can work in restaurants, such as {#blank#}2{#/blank#}(send) food to people. But do you know that some robots can play {#blank#}3{#/blank#}part in repairing railways(修铁路)?

In Japan, engineers {#blank#}4{#/blank#}(build)a very special robot in 2022. The special robot can do difficult and {#blank#}5{#/blank#}(danger) work. In the past, workers sometimes {#blank#}6{#/blank#}(fall) from high places when they repaired railways.However, with the help of this kind of robot, workers  can be safe(安全的) and have more free {#blank#}7{#/blank#}.

Now, this kind of robot helps only in a few {#blank#}8{#/blank#}(place) in Japan. Engineers plan{#blank#}9{#/blank#}(improve) it and put it into full service by early 2024.

Think about what will happen in the future if we also have this kind of robot. I think this must be good news for many railway{#blank#}10{#/blank#}(worker).

Winter is the best season of the year. During the winter, months, temperatures are usually colder and there are fewer hours of daylight. The winter months in most of China are November, December, and January. 

Cold winter temperatures are caused by the tilting (倾斜) of the Earth. When Earth's Northern Hemisphere (半球) is tilted away from the sun, there are fewer hours of daylight and the temperature is colder. When the Northern Hemisphere tilts towards the sun, there is more daylight time and the temperatures are warmer. The tilting of the Earth as it spins causes the seasons to change. 

Animals have special ways of preparing themselves for winter. Some animals, like birds and butter- flies fly long distances, or migrate, to warmer places during the winter months. Other animals such as bears, gophers, snakes go to sleep through the winter. Squirrels and raccoons (浣熊) don't migrate or hibernate. Instead, they gather enough food during the fall months, so they have plenty to eat during the winter. 

In some areas, winter is a time when snow falls and gathers on the ground. People who live in these places can enjoy special winter activities like skiing or snowboarding. They can also build snow- men. When the water in lakes and rivers freeze, people can ice skate or go ice fishing!