1 . It is late autumn—millions of gardeners across the northern hemisphere, pulled on their thickest sweaters, spent hours clearing large piles of leaves and packed them into plastic bags at the end of driveways.
In the US alone, nearly 10 million tonnes of garden waste go to landfill every year. That is a large amount of effort, not just from an environmental viewpoint but from that of our aching backs, too. So where does this advice come from? Well, it largely comes from the belief that thick fallen leaves can make plants under them unable to breathe, especially shorter grass. They shut down important photosynthesis (光合作用) and get in the way of the growth of the shorter grass. However, this received wisdom has recently been questioned by researchers at Wisconsin University.
The key finding of their new research was that although clearing fallen leaves is one of the most common gardening practices, it makes very little sense. In natural ecosystems, fallen leaves help return nutrients necessary for healthy plant growth to the soil, which greatly improves soil condition. Removing leaves year after year breaks this ecological (生态的) balance. Letting some leaves stick around to cover your garden is a great way to help your grass and the local ecosystem.
They further explained that if up to 50percent of your grass lawn (草坪) is covered by fallen leaves, you might as well go back indoors and put your feet up. The advantages of this light leaf coverage far outweigh the disadvantages—the leaves will quickly break down and help next year’s lawn grow far better than if you had cleared them. Only at over 50 percent coverage do the Wisconsin researchers recommend clearing.
So why not consider leaving the leaves? Save time, carbon and effort, and in exchange get a healthier lawn from this garden waste—that seems like a pretty good deal. And how many plastic bags could be saved by simply not binning fallen leaves every year? In the US alone, about 700 million.
1. What does the author describe in paragraph 1?A.An amazing autumn game. | B.A common sight in gardens. |
C.A hot attraction in the north. | D.An extreme weather event. |
A.Fallen leaves need not be cleared. |
B.Fallen leaves protect shorter grass. |
C.Fallen leaves block photosynthesis. |
D.Fallen leaves are hard to break down. |
A.it ruins city image | B.it breaks gardening rules |
C.it affects local economy | D.it causes ecological damage |
A.Doubtful. | B.Positive. | C.Unclear. | D.Worried. |
A: Long time no see.
B: It’s bad. I don’t feel well recently. A: what’s
B: I have caught a bad cold and run a high fever.
A: I am very
B: Yes, I went to see a doctor in Qilu Hospital yesterday. I was advised to take medicine on time, drink a lot of water and have a good rest.
A: And I think you should have light food. B: All
A: I
— Nobody. He taught________.
A.herself | B.myself | C.himself | D.yourself |
— All right! I will.
A.happy | B.crazy | C.honest | D.quiet |
Teenagers
1. Where can students find the public computers?
A.On the first floor. | B.On the second floor. | C.On the third floor. |
A.The library rules. | B.The opening times. | C.The library areas. |
A.They will have to go out at once. |
B.They will be warned to be quiet. |
C.They will not be allowed to enter next time. |
A.Dry his body. | B.Clean the floor. | C.Go swimming. |
Yuan Longping is known as the “father of hybrid rice”. His slim but strong body was just like
9 . At 17, I quit school, left home and moved from place to place. Years later, I was
My cellmate was Herbert. We both worked in the electric shop. I wouldn’t let the fact that I was
Before Herbert was
Once out of prison, I went to Herbert’s company, where I was
As we know, prison
A.fired | B.arrested | C.rejected | D.blamed |
A.dignity | B.ambition | C.innocence | D.identity |
A.unjustly | B.indirectly | C.leisurely | D.readily |
A.comfortable | B.satisfied | C.humble | D.occupied |
A.sentenced | B.released | C.punished | D.rescued |
A.duty | B.freedom | C.courage | D.fortune |
A.trust | B.honesty | C.praise | D.forgiveness |
A.promoted | B.convinced | C.informed | D.educated |
A.choice | B.judgment | C.direction | D.voice |
A.task | B.function | C.promise | D.explanation |
A.challenging | B.first-rate | C.decent | D.temporary |
A.limits | B.transforms | C.disciplines | D.marks |
A.label | B.attitude | C.signal | D.manner |
A.advice | B.position | C.route | D.reward |
A.caught up with | B.reached out to | C.kept away from | D.got ahead of |
10 . Some people cry during movies, while others only tear up for very sad or happy moments. Sometimes, we even cry randomly.
If someone begins to cry in front of you, your reaction may come from the discomfort you feel in this situation. Though you may not mean to, your response could cause the person who is crying to feel weak, embarrassed, or less understood. Instead of rushing to cheer a crier up or offer immediate help, sometimes it’s best to give a person space to cry.
If you’re around someone who is crying, respect their tears. Let them release (释放) their feelings and show them you care. Don’t rush to offer advice or to say anything at all. Give them space to process and release their tears.
It’s best not to hold in emotions all the time.
A.Don’t talk too much. |
B.We cry different types of tears. |
C.Then how can we deal with crying? |
D.Crying can be normal in certain situations. |
E.Sometimes tears are needed to process emotion. |
F.We should pay attention to your emotional problems. |
G.However, sometimes it’s important to hold back tears. |