1 . Macquarie Island is a tiny island that’s part of Australia. It’s about halfway between New Zealand and Antarctica. The island’s been made a world heritage area because it’s so untouched, but this unique environment is under threat from some unwanted visitors.
It all started when seal hunters came to the island in the early 1800s. They brought rabbits with them as a source of food for the journey, and also on board the ships were rats and mice, which made their way onto the island too. They’re being blamed for destroying the homes of marine birds, causing soil loss and ripping up plant cover, as these before-and-after photos show.
So what’s being done about the problem? It starts with a team of helicopters that fly across the island carrying these giant containers. Inside them are poisoned pellets (有毒饲料) which are dropped and spread across the island. For any rabbits that survived the baiting (诱饵) , there’s a plan B. This special team of dogs is being put through a final training. It’ll be their job to track down any remaining rabbits. They have to also learn to behave around the island’s native wildlife. The dogs could be here for years or until the task is complete. The dogs don’t actually kill the rabbits. They find them, then the hunters decide to either catch the rabbits or shoot them.
But the program has received a bit of criticism. Some people argue 25 million dollars is a lot of money to be spending on wiping out rabbits and rodents (啮齿目动物), and in the process, some native birds will be killed because of the baiting.
The reality is the problem isn’t going to be solved overnight. The people running the program say that even if one pair of rabbits is left alive, the whole task will be seen as a failure, which means these guys could be here for a long time, trying to ensure that this precious island remains protected from pests.
1. Who are these unwanted visitors?A.Seal hunters. | B.Marine wildlife. | C.Native birds. | D.Foreign species. |
A.Advancing. | B.Destroying. | C.Dividing | D.Balancing |
A.Poisoned pellets are being dropped on the island from helicopters. |
B.A team of hunters is being trained to catch or shoot rabbits. |
C.Native birds are being protected from the unwanted visitors. |
D.A special team of dogs is being sent to kill the rabbits. |
A.To spend as little money as possible. |
B.To protect native birds from the unwanted visitors. |
C.To ensure that no pair of rabbits survive on the island. |
D.To train dogs to track down the rabbits on the island. |
2 . Common water plant could provide a green energy source. Scientists have figured out how to get large amounts of oil from duckweed, one of nature’s fastest-growing water plants. Transferring such plant oil into biodiesel (生物柴油) for transportation and heating could be a big part of a more sustainable future.
For a new study, researchers genetically engineered duckweed plants to produce seven times more oil per acre than soybeans. John Shanklin, a biochemist says further research could double the engineered duckweed’s oil output in the next few years.
Unlike fossil fuels, which form underground, biofuels can be refreshed faster than they are used. Fuels made from new and used vegetable oils, animal fat and seaweed can have a lower carbon footprint than fossil fuels do, but there has been a recent negative view against them. This is partly because so many crops now go into energy production rather than food; biofuels take up more than 100 million acres of the world’s agricultural land.
Duckweed, common on every continent but Antarctica, is among the world’s most productive plants, and the researchers suggest it could be a game-changing renewable energy source for three key reasons. First, it grows readily in water, so it wouldn’t compete with food crops for agricultural land. Second, duckweed can grow fast in agricultural pollution released into the water. Third, Shanklin and his team found a way to avoid a major biotechnological barrier: For the new study, Shanklin says, the researchers added an oil-producing gene, “turning it on like a light switch”by introducing a particular molecule (分子) only when the plant had finished growing. Shanklin says, “If it replicates (复制) in other species-and there’s no reason to think that it would not — this can solve one of our biggest issues, which is how we can make more oil in more plants without negatively affecting growth.”
To expand production to industrial levels, scientists will need to design and produce large-scale bases for growing engineered plants and obtaining oil — a challenge, Shanklin says, because duckweed is a non-mainstream crop without much existing infrastructure (基础设施).
1. What can people get from duckweed firsthand?A.Plant oil. | B.Stable biodiesel. |
C.Sustainable water. | D.Natural heat. |
A.Options for renewable energy. |
B.Reasons for engineering genes. |
C.The potential of revolutionary energy source. |
D.The approach to avoiding agricultural pollution. |
A.Industrial levels. | B.Unique design. |
C.Academic research. | D.Basic facilities. |
A.Duckweed Power | B.Duckweed Production |
C.Genetic Engineering | D.Genetic Testing |
要点如下:
1、 森林的重要性。
2、 地球上森林的现状
3、 如何保护好地球上的森林。
注意:
1、字数80左右;
2、可适当增加细节,以使行文连贯;
3、开头和结尾己给出,不计入总词数。
Good morning, Ladies and gentlemen,
It’s a great honor for me to stand here and give my speech about how to protect our forest in the earth.
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Thank you for your listening!
A.Swimming. | B.Doing the research. | C.Catching fish. |
1. What is the speaker mainly talking about?
A.The destruction from a hurricane. |
B.The ways to survive a hurricane. |
C.Her experience of a nature disaster. |
A.Into the basement. | B.Into the garage. | C.Into the storeroom. |
A.About 80 miles an hour. |
B.About 90 miles an hour. |
C.About 100 miles an hour. |
A.Anxious. | B.Scared. | C.Calm. |
6 . There are hundreds of great national nature reserves in China. Now feast your eyes on the following amazing ones.
Qinghai Lake National Nature ReserveQinghai Lake, China’s largest saltwater lake in Qinghai Province, is a key body of water for lots of animals and birds. As an important stopover, migratory birds (候鸟) would rest in this area during their movement trip every year. The reserve became a national nature reserve in the year of 1997.
Bayanbulak National Nature ReserveThe only Bayanbulak Wetland, in Xinjiang Uygur Autonomous Region, is at the foot of Tianshan Mountains, which makes itself suitable for migratory birds. Bayanbulak means “rich spring water” in Mongolian, meaning that the area is rich in water. Every year, swans (天鹅) from different places fly here for nesting, which became a national swan reserve in 1986.
Rongcheng Swan National Nature ReserveAs one of the largest wintering places for swans in China, this reserve in Shandong Province mainly protects whooper swans (大天鹅), which make it different from other nature reserves. In 2007, it was changed into a national nature reserve. Now every year, thousands of whooper swans arrive here to spend the winter, making it an important resting and wintering place for themselves.
Sanya Coral Reef (珊瑚礁) National Marine Nature ReserveThis reserve focuses on protecting coral reefs and their living environment in Sanya City, Hainan Province. In 1990, it became a national nature reserve. This reserve is on the coast, so the area of the reserve has good water quality and many kinds of creatures,
1. What do the first reserve and the second reserve have in common?A.The area of wetland. | B.The geography of them. |
C.The year of becoming the national reserve. | D.The friendly environment for migratory birds. |
A.Its saltwater lake. | B.The whooper swans. |
C.Its rich spring water. | D.The warm climate. |
A.Bayanbulak National Nature Reserve. | B.Qinghai Lake National Nature Reserve. |
C.Rongcheng Swan National Nature Reserve. | D.Sanya Coral Reef National Marine Nature Reserve, |
Earthquakes are one of the most destructive natural disasters. They can happen just about anywhere. Earthquakes cannot be stopped,
If you are in
Remember that aftershocks are possible at any time and are
8 . An earthquake happens when two plates rub together. The earth plates travel in different directions and at different speeds.
The damage an earthquake causes depends on where it is and when it is happening. If an unpopulated region is struck, there will be low loss of life or property.
The shaking of the earth is sometimes not the greatest disaster.
A.Actually, there are several million small earthquakes every year. |
B.It is in the fires and floods that often the greatest damage occurs. |
C.Throughout history, there are numerous destructive big earthquakes. |
D.If it hits a large city, there may be many injuries and much destruction. |
E.So it is of great importance to predict the movements of the earth plates. |
F.If one plate is slowly forced under the other, pressure builds up until the plates break apart. |
G.The destructive damage of an earthquake can continue for years after the first shake. |
9 . I finally climbed into bed at 1: 20 in the morning. My friends had helped me celebrate my 31st birthday in the basement apartment, where I lived.
Earlier in the day I had prepared for the unlikely event of a flood. We are about a third of a mile from the banks of the Ahr River. It had been raining buckets that week and the government had sent out a flood warning, though not for where I was. Still, I’d placed sandbags on the floor outside my garden door and put electronics on tables. “Silly bro!” My friends laughed at me for doing that, but I thought, why take a chance?
As I drifted off to sleep, I was awakened by the sound of rushing water, as if I were lying beside a waterfall. When I got off the bed, I was shocked that cold water was rising fast. In darkness, I grabbed my cellphone and turned on the flashlight. When I stepped out of the bedroom, I saw water shooting through the gaps of the door.
I began to panic. I knew I had to get out—fast! In bare feet, I started to make my way to the only escape: the door that led upstairs to the main floor. Finally I made it to the door and tried several times to-pull it open even just a little bit, but the rushing water shut it again. I looked around for anything I could use to keep it open. There in the corner was a coat rack (架子). I took it and, once again, opened the door, throwing the coat rack between the door and the frame (门框) to keep the door from shutting. Finally, I managed to make a gap just wide enough to squeeze (挤) through and make it into the hallway.
I leaped on to the stairs and ran outside. I stood there in the darkness, wet through. What was once a lovely street was now a waterscape, with floating ruins instead of people and cars. The river had drowned (淹没) the neighborhood!
1. What does the underlined sentence in paragraph 2imply?A.Better safe than sorry. |
B.It never rains but it pours. |
C.A lost chance never returns. |
D.A friend in need is a friend indeed. |
A.Celebrating his birthday. |
B.Sleeping in the basement. |
C.Placing sandbags by the door. |
D.Playing with electronic devices. |
A.Making his way to the door. |
B.Finding a coat rack. |
C.Keeping the door from shutting. |
D.Squeezing through the gap. |
A.Sad and shocked. |
B.Annoyed and anxious. |
C.Surprised and disappointed. |
D.Puzzled and awkward. |
10 . Animals deserve to live a safe and healthy life as much as humans do.
Spread awareness. One way to protect endangered animals is to create awareness about them.
Drive carefully in forest areas. It is important to watch the road when you are going through roads in forest areas. Many animals die while trying to cross the road because people do not pay attention to them.
Avoid plastic items. Do you know what happens to a plastic bag thrown into a river?
A.Change your regular routine. |
B.So, we highly suggest careful use of water. |
C.Spend time rescuing animals in your locality. |
D.Sadly, this does not have universal acceptance. |
E.So we can save their lives by being more careful. |
F.It is probably eaten by an adult turtle, choking it to death. |
G.You can create local community groups that work for this cause. |