HELP PROTECT AUSTRALIA Food, plant material a...

1.Why are you asked to declare quarantine items on arrival?

A. They could contain some drugs inside.

B. They can’t be carried into Australia free of charge.

C. They are often the cause of various crimes.

D. They may carry pests or diseases into Australia.

2.Which of the following items need you NOT declare if you have them in your  luggage?

A. A bottle of honey.                             B. Dried flowers.

C. A hair-drier.                                         D. Wooden chopsticks.

3.If you don’t declare quarantine items, ______.

A. you can probably get away with them

B. you will be discovered and punished

C. you can turn to the customs officers for help

D. you can give them away to a quarantine officer

4. Which of the following information can also be included in this notice?

A. Inspection equipment.                           B. Size of your luggage.

C. Examples of quarantine items.             D. Souvenirs you can buy here

高三英语阅读理解中等难度题查看答案及解析

________more and more forests in Australia damaged, some animals and plants are facing the danger of dying out.

A.As B.For C.With D.By

高三英语单项填空中等难度题查看答案及解析

_____from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.

A. Being separated                   B. Having separated

c. Having been separated                 D. To be separated

高三英语单项填空中等难度题查看答案及解析

_________ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.

高三英语单项填空困难题查看答案及解析

Plants are living things. So can they feel pain? Plants don't feel pain the same way animals and people do, says Anke Steppuhn. She is a scientist at the Free University of Berlin in Germany. “What we define as pain usually has to do with a nervous system，” Steppuhn explains. When you put your hand too close to a hot stove, nerve cells send a signal to your brain. Your brain decodes(解码) that signal as pain. This causes you to pull your hand away before any serious damage is done.

Plants don't have nerves or brains, so they can't feel pain like we do. “But plants do recognize when something is hurting them，” Steppuhn says. Because they are rooted to the ground, they can't escape a dangerous situation. So they need other ways of fighting back.

The biggest threat to a plant's life is getting eaten. Some plants grow sharp little hairs. Other plants produce bad－tasting or even harmful chemicals. These force an attacker to abandon its meal. A plant called bittersweet nightshade does something even smarter, Steppuhn found. When a slug(蛞蝓) chews holes in a nightshade' s leaf, liquid begins dripping(滴) around the wound. It is almost as if the plant were bleeding. The liquid is sugary nectar(花蜜), and it happens to be a favorite food of ants. In their effort to collect the nectar, the ants swarm(蜂拥而至) all over the injured plant. They will attack anything that stands in their way. That includes the slug that damaged the plant in the first place. It's a very clever trick. Whenever a slug attacks a plant, the plant calls an army of ants to kill the slug.

Nectar isn't the only way plants attract bodyguards. They also release certain chemicals into the air when they are being eaten. People usually can't detect these smells. But wasps(黄蜂) can. When a wasp detects this cry for help, it races to the scene of the crime. If it finds the right kind of insect chewing down on the plant, the wasp will interrupt the attacker's meal. It will do this by laying eggs inside the insect’s body!

1.Why do plants feel pain differently from us?

A. They don’t know whether they're hurt.

B. They face different kinds of danger.

C. They don’t have nervous systems.

D. They have slow response to pain.

2.What does the underlined word “They” in Paragraph 3 refer to?

A. Ants.　　 B. Slugs.　　 C. Plants.　　 D. Wasps.

3.Why do some plants need wasps?

A. To help them call bodyguards.

B. To keep them safe from attackers.

C. To let wasps lay eggs on their leaves.

D. To let their smells spread into the air.

4.What is the text mainly about?

A. How plants feel pain.

B. How plants attract insects.

C. How plants defend themselves.

D. How plants attack small animals.

高三英语阅读理解中等难度题查看答案及解析

Most groups of plants and animals are richer in species and more plentiful near the equator. In the ocean, that holds true for cold-blooded predators(掠食者). But warm-blooded predators are more diverse toward the poles and noticeably missing from several warm hot spots. Why?

John Grady, an ecologist, and his team considered the possibility—warm-blooded animals need a lot to fuel their metabolism(新陈代谢). Perhaps colder waters are just richer in small fish? But they found that at higher, colder places, there isn’t actually much more food around. It’s more that warm-blooded animals are eating a much bigger share of it than their cold-blooded competitors.

The real explanation is simple. An animal’s speed, swiftness, and intelligence depend on its metabolism, which in turn depends on its temperature. Since birds and mammals can keep heating their bodies in icy conditions, they remain fast and attentive. By contrast, the fish they hunt become slower and duller. At some tipping point of temperature, seals, dolphins, and penguins start outswimming their prey(猎物). They become more likely to come upon targets and outpace the cold-blooded predators of their own.

In Grady’s words, “Warm-bodied predators are favoured where preys are slow, stupid and cold.” That’s why sharks and other predatory fish dominate near the equator, but colder waters are the kingdom of whales and seals. By keeping food to themselves in the poles, these creatures can then specialize on specific types of prey, which makes them more likely to split into separate species. The killer whales of the North Pacific, for example, include mammal-eating transients and fish-eating, year-round residents.

But the world is changing. It’s likely that the surface of the oceans will warm by 2 to 3℃ within this century. Grady’s team estimates that every time the ocean’s surface warms by 1℃, populations of sea mammals will fall by 12%, and populations of seals and sea lions will fall by 24%.

But “predictions are hard,” Donna Hauser from the University of Alaska Fairbanks notes. “Polar bears are losers of a warming world, but some populations are still doing well. Some groups of whales have changed the timing of their migrations; others are hunting in deeper, colder waters. These changes might make sea mammals more adaptable to changing climates. Maybe they just need to find the places where fish remain slow, stupid and cold.”

1.Why are there more types of warm-blooded predators near the poles?

A. Because there is more food.

B. Because there are fewer enemies.

C. Because they are faster and wiser.

D. Because they consume less energy.

2.The author mentions the killer whales to show ______.

A. the benefit of biological evolution

B. food preference of different sea mammals

C. the distinction of specific types of predators

D. the advantage of constant body temperature

3.What is Donna Hauser’s attitude towards the future of the sea mammals?

A. Positive. B. Negative.

C. Neutral. D. Sceptical.

4.Which is the best title for the passage?

A. Are the Poles Heaven for Sea Predators?

B. How Do Sea Mammals Track Their Prey?

C. Why Do the Warm-Blooded Like Food Cold?

D. Is the World Too Hot for the Warm-Blooded?

高三英语阅读理解中等难度题查看答案及解析

Many of the earth’s plants and animals have already ______ and several other species are endangered．

A．died away           B．died out       C．died down     D．died of

高三英语单项填空中等难度题查看答案及解析

Think plants are just boring green things that you use for food and decoration? Think again! Plants are able to do some pretty awesome things that you’re probably totally unaware of.

Researchers have discovered that plants have the ability to communicate with an underground network made up of fungus (真菌) , which serves the plants in many ways. Tomato plants use the fungus web to warn each other of their own unhealthy conditions. Trees connected through the fungus network could move nutrients (养分) to and from each other. It is believed that larger trees move nutrients to smaller ones to help them to survive.

Not only that, but they can also damage unwelcome plants by spreading poisonous chemicals through the fungus. It sounds like the plant world had the Internet before we did.

Some plants have a rather impressive line of defense against being eaten. When sensing they are being swallowed, they give off a chemical into the air that attracts the insect’s natural enemy. The enemy attacks the bug, thus saving the plants. This is basically the plant kingdom version of getting your older brother to beat up that kid who steals your lunch money.

You might be aware that humans and animals have an internal clock. But did you know that plants also have this clock? This means they can prepare for certain times of day just like we do. Is it because they can react to light at sunrise? In a study, scientists found that plants use the sugars they produce to keep time, which help to regulate the genes responsible for the plant’s own internal clock. So, in a sense, ―wake up with petunias (矮牵牛) is just as valid as ―wake up with the chickens.

Nature is full of surprises. So for those of you who didn’t know the wonders of plants, now you do.

1.How many ways does the network of fungus serve the plants?

A. Two. B. Three.

C. Four. D. Five.

2.What does the underlined words ― “your older brother” in Paragraph 4 refer to?

A. The chemical given off by plants. B. The insect’s natural enemy.

C. The bug attacked by the enemy. D. The plant to be eaten by the insect.

3.What helps the plant keep time?

A. The sugars produced by itself. B. Its own genes.

C. The time of sunrise. D. Its response to light.

4.What is the author’s purpose in writing the text?

A. To show his love of different plants.

B. To share his study on some awesome plants.

C. To introduce the unknown abilities of plants.

D. To make people aware of plant protection.

高三英语阅读理解困难题查看答案及解析

Think plants are just boring green things that you use for food and decoration? Think again! Plants are able to do some pretty awesome things that you’re probably totally unaware of.

Researchers have discovered that plants have the ability to communicate with an underground network made up of fungus (真菌) , which serves the plants in many ways. Tomato plants use the fungus web to warn each other of their own unhealthy conditions. Trees connected through the fungus network could move nutrients (养分) to and from each other. It is believed that larger trees move nutrients to smaller ones to help them to survive.

Not only that, but they can also damage unwelcome plants by spreading poisonous chemicals through the fungus. It sounds like the plant world had the Internet before we did.

Some plants have a rather impressive line of defense against being eaten. When sensing they are being swallowed, they give off a chemical into the air that attracts the insect’s natural enemy. The enemy attacks the bug, thus saving the plants. This is basically the plant kingdom version of getting your older brother to beat up that kid who steals your lunch money.

You might be aware that humans and animals have an internal clock. But did you know that plants also have this clock? This means they can prepare for certain times of day just like we do. Is it because they can react to light at sunrise? In a study, scientists found that plants use the sugars they produce to keep time, which help to regulate the genes responsible for the plant’s own internal clock. So, in a sense, ―wake up with petunias (矮牵牛) ‖ is just as valid as ―wake up with the chickens.‖

Nature is full of surprises. So for those of you who didn’t know the wonders of plants, now you do.

1.How many ways does the network of fungus serve the plants?

A. Two.　　 B. Three.

C. Four.　　 D. Five.

2.What does the underlined words ―your older brother‖ in Paragraph 4 refer to?

A. The chemical given off by plants.　　 B. The insect’s natural enemy.

C. The bug attacked by the enemy.　　 D. The plant to be eaten by the insect.

3.What helps the plant keep time?

A. The sugars produced by itself.　　 B. Its own genes.

C. The time of sunrise.　　 D. Its response to light.

4.What is the author’s purpose in writing the text?

A. To show his love of different plants.

B. To share his study on some awesome plants.

C. To introduce the unknown abilities of plants.

D. To make people aware of plant protection.

高三英语阅读理解困难题查看答案及解析

Many of the earth’s plants and animals have already1.(die) out, and a hundred species become 2.(endanger) every day. If nothing is done, we may find ourselves3. (lonely) on the earth.

Wild animals live in the4. (forest) which are being destroyed by people. As5. result, the animals are　 6.(lose) their habitats. Without the trees, the animals are short of food. And many animals are dying out because of pollution.

I suggest that measures should be taken　 7.(protect) wildlife. The government should keep people 8.destroying forests and shut down the factories 9.　 pollute rivers and air, I think more wildlife reserves should also be 10.(build)

高三英语语法填空中等难度题查看答案及解析