1 . Cows produce much methane, the world’s second worst greenhouse gas, as they breakdown the grass. They are a large source of the greenhouse gases that are driving climate change. Now scientists have shown the pollution from cows can be reduced by adding a little seaweed (海藻) to their food.
Recently, the researchers from the University of California studied 21 cows on a farm for about five months. They taught the cows to get their food from inside a special hood, which allowed the scientists to know the amount of the methane the cows were giving off. They added a small amount of seaweed to the cows’ food.
The consequences were surprisingly good. In some cases, the cows produced 82% less methane. The improvement depended on the kind of food the cows were given. Even the worst-polluting cows produced 33%less methane. Over the five months, the scientists didn’t see any signs that the cows’ stomachs were getting used to the seaweed and starting to produce more methane again. What’s more, the cows that were fed seaweed gained just as much weight as the other cows.
But there are still some big problems with the idea of feeding cows seaweed. For one thing, there’s not adequate seaweed to feed all of the cows in the world. So farmers would have to figure out a way to grow lots of seaweed. A bigger problem is that for most of their lives, cows live in the fields, where they eat grass. That means there’s no chance to feed them seaweed every day.
Still, as the study shows, something as simple as feeding cows seaweed can help reduce some of the pollution causing the climate crisis.
1. Why did the researchers carry out the study?A.To discover healthier grass for cows. | B.To improve the cows’ living conditions. |
C.To test the effects of the seaweed. | D.To measure the amount of methane in the world. |
A.The results of the study. | B.The methods of the experiment. |
C.The background of the subject. | D.The process of the research. |
A.Lacking. | B.Enough. | C.Common. | D.Special. |
A.Critical. | B.Doubtful. | C.Positive. | D.Negative. |
2 . Do you like traveling? Would you drive around the world on a motorbike? Would you do it with a dog
Anya and Sunny are having the journey around the world together by
Sunny is a German shepherd who weighs 34 kilograms and is perfectly
Anya could not
But according to Anya, it’s totally
One thing Anya has noticed so far is that no matter which country or area they have gone through, the reaction to Sunny is
A.jumping | B.walking | C.running | D.staying |
A.bicycle | B.car | C.motorcycle | D.tricycle |
A.find | B.cost | C.take | D.send |
A.comfortable | B.awkward | C.busy | D.natural |
A.balance | B.judge | C.compete | D.perform |
A.curious | B.careful | C.grateful | D.stylish |
A.consider | B.stand | C.avoid | D.miss |
A.therefore | B.however | C.moreover | D.instead |
A.contributed | B.admitted | C.limited | D.applied |
A.suitable | B.opposed | C.helpful | D.worth |
A.apparently | B.eventually | C.finally | D.frequently |
A.picks | B.turns | C.rests | D.depends |
A.delighted | B.upset | C.shocked | D.confused |
A.strange | B.common | C.distant | D.different |
A.works | B.matters | C.improves | D.challenges |
1.唐诗地位及影响; 2.列举著名诗人; 3.如何背诵诗歌。
注意:1.词数80左右; 2.可以适当增加细节,以使行文连贯。
Hello, everyone!
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________That’s all. Thank you for your listening.
As a French author once put it, “Tell me what you eat, and I will tell you what you are.”
Before coming to China, all the Chinese food I tasted in America was totally changed
Chinese people everywhere show friendship and kindness through food.
1. What day is today?
A.Monday. | B.Wednesday. | C.Thursday. |
A.In the west. | B.In the north. | C.In the south. |
A.Cloudy and windy. | B.Windy and rainy. | C.Mild with light rain. |
A.On Friday. | B.On Saturday. | C.On Sunday. |
1. What seems to have been heard?
A.Someone is walking. | B.The wind is blowing. | C.A pet is playing |
A.Going out to check. | B.Turning on the light. | C.Going to sleep quietly. |
1. Why does the man come to see the woman?
A.To get some medicine. |
B.To have his temperature taken. |
C.To get a note for a day’s leave. |
A.Forgive him this time. | B.Punish him for his lying. | C.Talk with his teacher about him. |
A.It is spring now. |
B.The man will put off PhysicsⅢ. |
C.The woman is making a suggestion. |
A.At a hotel. | B.At a library. | C.At a hospital. |