In China, the traditional Chinese lunar calendar (阴历) divides a year into 24 solar terms (节气), which were     1     by people thousands of years ago to guide agricultural production (农业生产). But the solar term culture is still     2     today in guiding people’s lives.

Spring Equinox (春分) is the fourth solar term of the year. Days begin to be     3     than nights after this day. As for     4    , flying kites is a common activity during this time. People often write good words on their kites. They all hope that their     5     will come true when the kites are flown high in the sky.

Great Heat (大暑) is the 12th solar term of the year. During this time, most parts of China enter the     6     season of the year and the sunshine, high temperatures, and heavy rainfalls are good for the plants. But many natural disasters (灾害) also     7    .

Frost’s Descent (霜降) is the 18th solar term of the year, the last solar term of autumn, during this time, the weather becomes much colder than before and the temperature changes     8     from day to night. The chrysanthemums (菊花) are in bloom (盛开).

Major Snow (大雪) is the 21st of the solar terms, and the third one of winter, making the arrival of mid-winter. The temperature     9     day by day, as the year is coming to a(n)     10    . The snow in North China may last a whole day, and heavy snow brings us a fantastic ice world.

You are standing in a beautiful forest in Japan. The air is clean. There are about 170 different kinds of trees, and about 60 kinds of     1     living here. However, you are not in the     2    . You are in the city of Nara, Japan, in Kasugayama Forest, an old urban（城市的）forest. It was started more than a thousand years ago, and today it is very     3     with visitors and artists（艺术家）.

Cities around the world are working to     4     their urban forests. Some urban forests are parks, and some are streets     5     a lot of trees. But all urban forests are good for people and make the city more beautiful. In some cities, urban forests can be very     6    . In London, there are now 1.3 million trees in an urban forest     7     “Thames Chase”. It was started in 1990, and it has grown very fast. Walking and bicycle clubs use the forest. And there are also programs for     8     and artists. In 2033, it will have 5 million trees. Some older cities are     9     small to have a big urban forest but they are growing more trees on the streets. People can feel more relaxed     10     they see trees. In the future, urban forests will become more important as cities grow bigger.