1 . From Facebook I got to know the Cajun Navy.And there,thousands of selfless volunteers piloted
I got two-minute "training"and a"Good luck!".Then I began to answer calls.The first call was from Chad.He was
I took request after request.Around 4:30 am,I got a request from Saundra whose grandfather lived
But later I learned the Cajun Navy had no boats on the water to help,with the flood so severe.It's no wonder that we had so many people desperately begging for rescue.It looked as if I'd been
At 3:00 pm,Saundra told me that her grandfather was on his way to a rescue center.I let out a huge sigh of
I'd been awake for 20 hours but wasn't
| A．trucks | B．planes | C．boats | D．cars |
| A．found | B．changed | C．adjusted | D．deleted |
| A．pictures | B．risks | C．orders | D．calls |
| A．read | B．work | C．write | D．travel |
| A．stuck | B．shot | C．hidden | D．locked |
| A．frequently | B．again | C．slightly | D．instead |
| A．abroad | B．plainly | C．separately | D．together |
| A．break through | B．get through | C．point out | D．burst out |
| A．wandering | B．apologizing | C．lying | D．fighting |
| A．dropped | B．lost | C．located | D．allowed |
| A．accuse | B．approve | C．remind | D．warn |
| A．pain | B．shame | C．relief | D．regret |
| A．safe | B．sick | C．sleepy | D．terrified |
| A．anxious | B．shocked | C．conscious | D．tired |
| A．attained | B．slept | C．bothered | D．negotiated |
2 . Scientists have long known that a crow （乌鸦）native to New Caledonia is able to use tools. The birds use them to remove food from deep holes. Now, American researchers have discovered a second species of crow with the same ability. They reported on their experiments with Alala crows, which are from the Hawaiian Islands.
In the experiment, the researchers placed pieces of food in holes inside the wood. The holes were too deep for the crows to reach with their beaks(鸟喙). But, by using small pieces of wood held in their beaks, Alala crows quickly got the food. They used small objects as tools, sometimes changing them by shortening too-long sticks. They also made tools from plant materials.
“The crows use their beaks as people use thumbs on their hands. Tool use is rare in the animal kingdom. ” said Chritian Rutz of University of St. Andrews. “Current evidence strongly suggests that tool use is part of the species’ natural behavioral pattern(行为模式). These birds had no special training in the study, yet most of them were skilled at handling stick tools. ”
Bird experts claim finding out that the crows use tools is important discovery. “It makes us rethink how to look at the whole tool-use idea now and encourages us to go out and look for things that we may have ignored before. ”
All the Alala crows left in the world live in Hawaii. There were less than 20 Alalas left in the late 1990s when scientists decided to bring them into a protected area. Now, it is reported that there are over 100 birds living there. Scientists plan to release a small number of the birds back into the wild later.
1. What are the findings of American researchers?| A．Alala crows can also use tools. |
| B．It’s difficult for birds to look for food. |
| C．New Caledonia is home to some crows. |
| D．The Hawaiian Islands are full of rare birds. |
| A．The holes were very big and wide. |
| B．Alala crows could only use short sticks. |
| C．Alala crows got the food by working together. |
| D．Alala crows would deal with tools if necessary. |
| A．Using tools comes naturally to Alala crows. |
| B．Using stick tools is not easy for Alala crows. |
| C．Alala crows’ beaks look like people’s hands. |
| D．Alala crows won’t use tools without being trained. |
| A．Move all of them out of Hawaii. | B．Increase the population of them. |
| C．Set some of them free in nature. | D．Build more protected areas for them. |
3 . Different things usually stand for different feelings.Red，for example，is the color of fire，heat，blood and life.People say red is an exciting and active color.They associate red with a strong feeling like
In general，people
| A．sadness | B．anger | C．.administration | D．smile |
| A．roads | B．ways | C．danger | D．places |
| A．land | B．leaves | C．grass | D．mountains |
| A．lively | B．dark | C．noisy | D．frightening |
| A．moonlight | B．light | C．sunlight | D．stars |
| A．summer | B．spring | C．autumn | D．winter |
| A．speak | B．say | C．talk about | D．tell |
| A．green | B．yellow | C．white | D．gray |
| A．calm | B．sleepy | C．active | D．helpful |
| A．the other | B．another. | C．other one | D．others |
| A．black | B．red | C．golden | D．yellow |
| A．go round | B．go by | C．go off | D．go along |
| A．one | B．way | C．fact | D．matter |
| A．factory | B．classroom | C．restaurant | D．hospital |
| A．Different | B．Cool | C．Warm | D．All |
4 . A 67-year-old man tried to rescue his dog from a cliff in California and died tragically. Actually,he is not the only pet owner who has risked his life saving an animal. There are many equally brave pet owners whose names are on the same list.
It's a scene from a famous TV series, when at a very important moment the 67-year-old Jack ran back into the family's burning house to save his daughter's dog He later died from cardiac arrest(心脏停搏) caused by taking in too much smoke.
After all that is not real, some might think. But similar stories are not difficult to find, in which the pet owners paid the ultimate price for saving their pets.
Recently, a 61-year-old Florida man was hit by a train with his dog after running out to save it from the railway. One month earlier, a woman in California died in the flames of a wildfire while trying to rescue her dog from a car. And in Texas after a hurricane, a 25-year-old man died from an electric shock after trying to save his sister's cat from her flooded home.
There have been many studies on humans attachment to pets, and there have been results associating health benefits with caring for animals. According to those studies, owning a pet can help lower blood pressure, reduce stress and relieve anxiety or depression.
According to one survey of American Pet Products Association, about 68 percent of the US families own a pet. And of all the pet owners, about 95 percent consider their pets part of the family.
1. What happened to the old man in paragraph 1?| A．He saw a tragedy last week. |
| B．He climbed a cliff. |
| C．He lost his life as a result of saving his dog. |
| D．He joined a growing list of courageous pet owners in an activity. |
| A．comparing | B．giving examples | C．analyzing | D．giving a definition |
| A．Jack's death was a result of heat in the smoke. |
| B．There aren't other pet owners who choose to do the same as Jack in real life. |
| C．Humans shouldn't take the risk of saving their pets. |
| D．There is scientific evidence that having a pet is good for people's health. |
5 . A very dangerous situation happened in California last week. More than 12 wildfires broke out in the state. Most of them began on October 8, in Northern California. They grew rapidly. The fires were made bigger by winds of up to 50 miles per hour and dry air in the area.
At least 20 people have been killed, the state government said. About 200 have been injured. At least 3,500 homes and businesses have been destroyed. About 50,000 people have been required to escape. Many left in a hurry, without time to take their personal things. “All the good stuff(东西)—I’m never going to see it again,” Jeff Okrepkie said. He escaped from his Santa Rosa home. It was destroyed soon after he left.
The fires burned through parts of eight counties(郡，县). These include Sonoma and Napa. The areas are important to California’s economy(经济). They are home to many of the state’s vineyards(葡萄园) and wineries(酿酒厂). In 2016, California’s wineries made more than $57 billion.
October is when wildfires usually produce the most ruins in California. But it is unusual for so many fires to start at once. Up to now, the government has not given a cause for any of the fires, many of which were still burning.
1. Why did the fires grow quickly?| A．Most of the fires began in October. | B．12 fires happened at the same time. |
| C．The state government didn’t do anything. | D．High-speed wind and dry air. |
| A．50,000. | B．200. | C．3,500. | D．20. |
| A．Homes have been destroyed. | B．Wineries have been burned. |
| C．People have to leave their homes. | D．Many people have been injured. |
| A．The high-speed wind and dry air. | B．Many fires started at once. |
| C．October produces the most ruins. | D．The cause is not explained. |
6 . More than one million single-use straws (吸管), most of them plastic, are used in the United States each day. They end up in waterways, harm sea animals, and break down into micro-plastics. Quantities of places have passed plastic-straw bans as a way to start handling the global plastic waste problem.
Straw materials: advantages and disadvantages
1. Metal
Made of stainless steel, aluminum, or even titanium, metal straws have become popular. They draw some criticism for having a metallic taste and conducting heat from a hot drink, but they’re strong and can be reused.
2. Paper
Paper drinking straws, which date from the late 1800s, often absorb liquid over time and can leave a taste or fibers in drinks. They’re the most popular throwaway choice in places with plastic-straw bans.
3. Glass
Though glass straws may be more breakable and thus less portable than reusable straws of other materials, they hold up well to washing and reuse. Some straws are made to look artistic, with colors and blown-glass designs.
4. Bamboo
This natural material can be sustainably produced and is a plant-based replacement of plastic straws. Bamboo straws are easily disposed of and turned into fertilizer. They are reusable but can be hard to clean completely and may absorb flavors.
1. What is the major problem with plastic straws?| A．Function. | B．Flavor. |
| C．Weight. | D．Pollution. |
| A．Metal straw. | B．Paper straw. |
| C．Glass straw. | D．Bamboo straw. |
| A．It can become fertilizer. | B．It is easy to clean. |
| C．It is portable and bendable. | D．It has different designs. |
7 . According to Dr. William Conway, director of the New York Zoo and chairman of the American Association of Zoological Parks and Aquariums, modern zoos can do a great deal to serve as a backup strategy to support the primary conservation goal of safe-guarding species in their wild habitats. No less and no more.
Zoos are severely limited in terms of sheer space, let alone animal care capacity. All the animal space in the world's zoos would comfortably fit inside the Inner London Circular. They now contain rather more than half a million individual mammals, birds, reptiles and amphibians. During the past few years they have bred about 9 percent of all 8,700 bird species, and 19 percent of all 4,500 mammal species.
Not all of these are vet threatened or rare creatures; this is the case for only 12 percent of the birds and 48 percent of the mammals. But the number of endangered forms is expanding rapidly.
It is an expensive business to care for threatened animals. To look after one Siberian tiger costs almost f2,000 a year, which means that to care for an expected total of 500 Siberian tigers in the world's zoos over a period of 20 years will cost almost ￡20 million.
Gorillas are even more costly: the 500 in zoos cost ￡2,850 each per year, making a total of ￡28 million over 20 years. Unless we can keep them alive in captivity, we shall probably witness, within the coming decades, the demise of around 100 large carnivore species, some 160 species of primates, and perhaps 215 herbivores other than primates, plus about 300 species from other mammalian orders, making a total of about 800 species.
1. According to Dr. William Conway, modern zoos serve as _____.| A．research facilities to enrich our knowledge of wildlife |
| B．an alternative way to protect some animal species |
| C．places to raise public awareness of animal care |
| D．habitats and breeding grounds for endangered species |
| A．Death. | B．Failure. | C．Recovery. | D．Rescue. |
| A．High captive costs. |
| B．Limited animal space. |
| C．Limited animal care capacity. |
| D．Restricted funding for endangered species. |
8 . Many of the Earth's creatures die because of humans' choices. These choices have nothing to do with food or shelter or anything else that helps humans survive. What kills millions of animals all over the world is that humans want to make money by doing so.
People use parts of animals for everything from hats to handbags, from jewelry to ashtrays and to make powders that supposedly improve a person's life. Deciding that a species is endangered and protecting it by law are not always enough. People who kill wildlife illegally rarely get caught.
During the late 1980s, saving elephants became a popular cause. Wildlife protection groups made sure everyone saw pictures or films of elephants with their faces cut off for their ivory. These groups also proved that certain populations of elephants were decreasing. As a result, most people stopped buying objects made of ivory. Laws against poaching (偷猎) were made stronger. Many countries made importing ivory illegal. Killing elephants for their Ivory became more risky and less profitable (有利可图的).
However, concern for certain species will become weak after a while. In the late 1970s, people protested (抗议) against the killing of seal babies. Everyone was shocked to see young seals being killed in their icy habitat. The cruel activity stopped. But ten years later, the number of seal babies killed was higher than ever.
Other animal protection movements have come and gone, such as saving the whales and protecting dolphins. The whale population appears to have increased for now. And the laws are finally changed in America to protect the dolphins that swim with tuna fish in parts of the Pacific Ocean.
In the years to come, people's attention will probably turn to some other endangered species. Plenty of them urgently need attention. During this time, will the elephants be forgotten?
1. What leads to the disappearance of millions of wild animals?| A．The growing human population. |
| B．Humans’ hope for making a fortune. |
| C．Humans’ too much need for wild food. |
| D．Not having enough laws on wildlife protection.. |
| A．Wildlife protection groups did make great efforts. |
| B．Importing ivory in all countries is illegal. |
| C．Those who killed elephants all got caught. |
| D．Hunting was completely not allowed. |
| A．To show the effort to protect seal babies. |
| B．To show an increasing number of seal babies. |
| C．To show the decrease of worry about certain species. |
| D．To show people’s protest against the killing of seal babies. |
| A．Humans should choose some rare animals to protect. |
| B．Attention must be paid to saving some endangered wildlife. |
| C．Success has been achieved in quite a few cases of wildlife protection. |
| D．Concern and movements for animal protection should be always kept. |
Plastic is a huge problem for our planet. It is really
Now a company from the Netherlands, a small country in western Europe, says that it will use plastic
Not only will this be good for the environment, but also it will be good for the people who look after roads. If a part of the road
Scientists
10 . Do you know how to plant a tree？Once you’ve chosen a tree，you’ll need to prepare your place for planting．
Planting the Tree
Dig a hole a foot deeper than and twice as wide as the root ball of the new tree．loosen the soil at the bottom and sides of the hole，so roots will be able to easily enter the soil．
Gently remove the tree from the container and guide the tree into the hole．Build soil up and around the roots if necessary，so the tree is at the same soil level as it was originally grown．
Straighten the tree in the hole．Before you begin filling，have someone view the tree from several directions to confirm that the tree is straight．You should fill the hole with existing soil that has been mixed with rich materials．At this time you can also add bone meal and then water the tree．
Caring for the Tree
Caring for the tree once it is planted is an important step so you should provide regular watering．Always feel the soil before watering，as over-watering can also harm the tree．When soil is dry below the surface of the covering，it’s time to water．You will probably need to water at least once a week．Continue until mid-fall，when lower temperatures call for less-frequent watering．
When to Plant a Tree
Now that you know how to plant a tree，the next step is deciding when to plant．Spring and fall are generally the best times to plant a tree．This gives the tree time to adjust（调整）before summer heat or winter cold arrives．In areas without cold winters，trees may be planted during the winter．
1. Which of the following is one of the suggestions for planting a tree？| A．Making the tree straight in the hole． |
| B．Watering the tree as much as possible． |
| C．Filling the hole with soil without anything． |
| D．Planting the tree in winter． |
| A．It is necessary to keep the soil in the hole from getting dry． |
| B．It isn’t very important to care for it after the tree is planted． |
| C．It is very important to make sure that the soil in the hole is dry． |
| D．It is necessary to water the tree frequently in lower temperatures． |
| A．Both seasons don’t have much rain． |
| B．It is easy to dig holes in both seasons． |
| C．Trees can grow fast and well in both seasons． |
| D．Trees have time to prepare to pass the following hard times． |
