Billions of poor people around the world     1     (depend) on the use of wood for cooking. And as they take more and more firewood from wild areas, they are destroying habitats around the world. Wood collection is one reason why many animals have become endangered. This is     2     Dr. Metcalf spends each summer in Africa. He wants to teach women and children in villages how to cook with the sun. He helped create Solar Cookers International. It’s an organization     3     introduces solar cookers to developing countries as well as teaching people how to use them.

【推荐2】Every weekend, after hiking in the Saneum Healing Forest east of Seoul, the firefighters sip tea and enjoy an arm massage. The aim of program is     1    offer) “forest healing”; the firefighters all have certain types of stress disorder. Saneum is one of three official healing forest in South Korea, which offer a range of programs from meditation to woodcraft to camping. Soon there will be 34 more. South Koreans, many of whom suffer from work stress, digital addiction, and intense academic pressures,    2    (welcome) the medicalization of nature with great enthusiasm. In fact, the government is investing a hundred million dollars     3     a healing complex next to Sobaeksan National park.

There is increasing evidence     4     being outside in a pleasant natural environment is good for us. But what is frustrating is that fewer of us actually enjoy nature regularly. According to Lisa Nisbet, a psychology professor at Canada’s Trent University, evidence for the benefits of nature is pouring at a time    5     we are most disconnected from it. The pressures of modern life lead to long hours spent working indoors. Digital addiction and strong academic pressure add to the problem. In America, visits to parks have been declining since the dawn of email, and so    6     visits to the backyard. Research indicates that only about 10 percent of American teens spend time outside every day.

So what are some of the benefits of nature that Nisbet refers to?    7     (surround) by nature has one obvious effect: the more time we spend in nature, the     8     (stressful) we become. This has been shown to lower blood pressure, heart rates, and levels of the stress hormone, as well as reduce feelings of fear or anger. But studies also indicate that spending time in nature can do more than provide an     9     (improve) sense and well-being; it can lower rates of heart disease and diabetes. That is probably     10     we evolved in nature and have been adapted to the natural environment.

The sun’s changing energy levels are not to blame for recent global warming and, if anything, solar variations over the past 20 years should have had a cooling effect, scientists have said.

Their findings add to a growing body of evidence       1     human activity, not natural causes, lies behind the rising average world temperatures, which     2     (expect) to reach their second highest level this year since records began in the 1860s.

There is little doubt that solar variability has influenced the Earth’s climate in the past and     3     well have been a factor in the first half of the last century, but British and Swiss researchers said     4     could not explain recent warming. Over the past 20 years，all the trends in the sun that could have had an influence on Earth's climate     5     (be) in the opposite direction to that required to explain the observed rise in global mean temperatures.

Most scientists say emissions of greenhouse gases, mainly from burning fossil (化石的) fuels in power plants, factories and cars, are the prime cause of the current warming trend. A     6     (decrease) group pins the blame on natural variations in the climate system, or a gradual rise in the sun’s energy output.

They concluded that     7     rapid rise in global mean temperatures seen since the late 1980s could not be attributed to solar variability,     8     mechanism was used.

The     9     (warm) years in the past 150 years have all been since 1990 and a United Nations climate panel,     10     (draw) on the work of 2,500 scientists, said this year it was “very likely” that human activities were the main cause.

Last Monday, having gotten my promise of taking care of my mother, my father left for a business trip.     1     (see) him driving away, my mother and I waved our hands and said goodbye to him.

I thought everything would go well , as this was not the     2     (one) time that my father had been away for several days. Unfortunately, my mother     3     (catch) a cold the next morning. Looking at her pale face, l experienced high levels of anxiety.     4    , I told myself that I had     5     (calm) down and look after my mum, as I promised to my dad.     6    moment I got my mum to sleep, I put a cold towel on her forehead, found pills in the medicine box, and made some noodles for her.     7     (lucky), she woke up and felt     8     (good) after taking the medicine and the noodles.     9     her fever was gone relieved me a lot. In the next four days, I was taking her body temperature twice a day to make sure that she was completely well. To our happiness, my dad went back home on Saturday. On hearing what I     10     (do) to my mum, he gave me a big thumb. Hearing their praises and seeing bright smile on their faces, I really felt overjoyed.

Jim and I first met Tom and Gee in the early days of our     1    (marry).Someone had been returning our garbage cans to the garage each garbage day,and we had wondered who.Then one day we spotted him,    2     elderly man who lived across the street.

I baked cookies and left       3    on a bench outside the garage with a thank-you note. Later that day,we found that a typed letter     4    (replace)the gift.The letter was from Tom and explained why he returned cans for people he barely knew.Back when he'd been fighting a war,his young wife,Gee,had lived alone.Neighbors had taken the time       5    （handle)her garbage cans and he never forgot.Now by doing the same       6    all of us, he paid it forward.

    7    (gradual)we got familiar.His wife Gee one day invited us to look through their Christmas decorations.Gee quietly explained each decoration,     8     was collected during every year's after-Christmas sale.As our kids left with the box of decorations,she smiled.Her treasures,     9    (gather)over a lifetime,found a new home.

Now every Christmas,we decorate our tree with Gee' s treasures and Tom's letter, reminding ourselves of     10     it means to be a neighbor.

Honesty, my mum always used to tell me, is the best policy. When it comes to medicine, I had assumed it was important to always be honest     1     my patient. After all, the doctor-patient relationship is based on trust, and therefore honesty is essential or so I thought.

I had just started working in geriatrics(老年科). Mr. McMahon was brought in when his belly was found very swollen(肿的). I took a medical history from his daughter who’d accompanied him in the ambulance. She’d been his main career for years. I stood     2    (look) at him as she gave a detailed history. “Has he lost any weight recently?” I asked, “Well, it’s funny you     3       mention that, but yes.” She said slowly. Obviously, she     4    (involve) very much in his care and it was only fair     5     I told her the truth. “Well, we need to prove it’s not cancer.” I said and talked briefly about some of the tests     6     I was going to order.

Half an hour later, a nurse called me: “Mr. McMahon’s daughter broke down－she said you told her he had cancer.” My heart sank. By the time I arrived at the ward, my consultant(高级顾问医师) was already there, explaining that we still had to run lots of tests and that     7     was by no means confirmed that he had cancer. I stood silently at the end of the bed. My consultant was obviously angry with me and as we left Mr. McMahon, she turned to me. “Why on earth did you do that?” she asked. I looked at her and bit my lip. “She asked me what I was worried about and I told her.” I said, hanging my head. “And give her more to worry about?” replied my consultant. “You don’t say the word ‘cancer’ until it’s confirmed.     8     you suspect it, think very carefully before you tell people.”

As it turned out, it wasn’t cancer. But I did learn that when someone is stressed and worried about their loved one they’re sometimes selective in     9     they hear—and as a doctor it’s important to be mindful of this. In being truthful, I’d made the situation     10    (bad).