Have you ever noticed that you feel     1     (happy) and more relaxed after you eat bread，pasta or fruit? Do you find that you are more energetic and awake after eating yogurt or beans? These things are not accidents. Food     2       (affect) how we feel more than we think. Scientists researching     3     (it) effect on our moods are beginning to understand that we can influence our feelings with what we eat.

Although our moods relate     4     having various food，it is not quite as simple as choosing the food for the right occasions. If that     5    (be) the case，athletes would not eat a lot of carbohydrates before a race.

Another chemical     6    (connect) with our moods is caffeine,     7    is found in coffee, chocolate and many types of tea，and it is perhaps     8     worst thing you can have when you are feeling stressed.

Of course，enjoying a nice meal with friends，whatever we eat，can also impact our spirits.     9    (be) with friends and family plays a big part in experiencing happiness.

Most importantly，though，remember the following old rule：try to eat different food，    10     not too much.

More than 11,000 scientists from 153 countries have sounded the alarm on climate change. In a paper     1    (publish) last week in the journal BioScience, they signed a declaration(声明) stating clearly that planet Earth is facing a climate emergency, saying that if no changes     2    (make) , the world will face untold suffering. The evidence that the scientists collected reveals an undeniable truth     3     human activities have been causing global warming from the fast rise of fossil fuel consumption     4     the increase in greenhouse gas emissions(排放) over the past 40 years.

The scientists also gave some instructions to fight against global warming, proposing six actions to prevent     5    (far) disasters: stabilizing population     6    (grow) by investing into family-planning services and girls’ education, replacing fossil fuels, cutting the emissions of climate pollutants, eating less meat, restoring and protecting     7    (ecosystem) , and building     8     carbon-free economy.

The scientists say the climate crisis is    9    (close) related to human activities, so they call on people     10    (change) their life styles. But these measures are comparatively abstract. Therefore, it is high time for policymakers to figure out more practical measures that can bring down carbon emissions.

In the presence of animals

A professor of public health at UCLA says that pet ownership might provide a new form of health care. As far back as the 1790s, the elderly at a senior citizens’ home in England     1     (encourage) to spend time with farm animals. This would help patients’ mental state more than the cruel therapies     2     (use) on the mentally ill at the time. In recent years, scientists have finally begun to find proofs     3     contact with animals increases a sick person’s chance of survival, and has been shown     4     (lower) heart rate, calms upset children, and gets people to start a conversation.

Scientists think that animals’ companionship is beneficial     5     animals are accepting and attentive, and they don’t criticize or give orders. Animals have the unique ability to be more social. For example, visitors to nursing homes get more social responses from patients when they come with animal companions.

Not only do people seem     6     (anxious) when animals are nearby, but they may also live longer. Studies show that a year     7     heart surgery, survival rates for heart patients were higher for those with pets in their homes than those without pets. Elderly people with pets make fewer trips to doctors than those without animal companions, possibly because animals relieve loneliness. Staying with animals is believed to create a peaceful state of mind,     8     (result) in a favorable environment for everyone.

Research confirms that the findings concerning senior citizens can be applied to restless children. They are more easy-going when there are animals around, with     9     company they tend to calm down more easily. They involve    10     in playing with animals and the presence of animals comforts them greatly.