The use of bamboo in science and technology is really exciting. In the Warring States period, Li Bing     1     (lead) the local people to build the Dujiang Weir, the first irrigation network in the world,     2     bamboo played an important role. During the Han dynasty, the Sichuan people successfully sank     3     1,600-meter-deep well with thick bamboo ropes. This technology didn’t spread to Europe     4     the 19th century and in 1859 Americans sank the first oil well in Pennsylvania by     5     (employ) the technology.

Papermaking     6     (be) one of China’s four ancient great inventions. In the Han dynasty, people began to use bamboo     7     (make) paper, which was of excellent quality and fair price. Even now it is considered as one of the important materials in papermaking. Some of the Xuan paper for traditional Chinese painting is also made     8     bamboo.

In the Yuan dynasty, a man     9     (plan) to send a person on the chair to space tied a big bamboo tube filled with gunpowder onto each of the four legs of a chair. Although it appears amusing, it is regarded as the     10     (early) “manned rocket design”.

2 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Plant lovers believe that talking to plants helps them grow. Scientists have discovered there could be real     1     (true) in this belief. Researchers have discovered that plants give off sounds when they are stressed. The sounds are quite similar     2     a human cry. Unfortunately, plant sounds are at too high a frequency for the human ear     3     (pick) up. Humans can only hear frequencies of up to 16 kilohertz (赫兹). Using special Al technology, scientists can now pick up sounds     4     (send) out by plants that are up to 250 kilohertz. The Al can also tell differences between different types of plant sounds.

The research     5     (do) in a greenhouse at Israel’s Tel Aviy University. Lead researcher Professor Lilach Hadany said: “Plants usually give off sounds when they     6     (be) under stress. Each plant and each type of stress is connected with     7     specific sound.” She suggested that crop fields could be quite     8     (noise), saying “While unable to be picked up by the human ear, the sounds given off by plants can be heard by bats,     9     (mouse) and insects. Understanding these sounds could help us know when crops need watering,     10     means farmers could water their crops more efficiently and thus save water and money.

Like China’s Kunming Institute of Botany, the Millennium Seed Bank(MSB)shines brightly for plant preservation. Located at the Wakehurst wild botanic garden in West Sussex, England, the Millennium Seed Bank (MSB), the world’s     1     (large)seed bank, has announced that it now holds more than 40, 000 wild plant species.     2     the aim of preserving rare, threatened and important wild plants, MSB     3     (create)by researchers from London’s Kew Gardens more than 20 years ago. Now around 2. 4 billion individual seeds from 190 countries are stored in     4     (it) underground rooms. Any seeds that arrive at MSB are dried, cleaned     5     then stored at-20℃. Scientists remove the seeds every 10 years     6     (see) if they can still grow into plants, and to develop new ways of       7     (help) wild plants survive. One of the most remarkable     8     (strong) of MSB is that it serves as a global backup for plant variety. Seeds in the bank include the world’s smallest water lily, a rare Australian pea and Antarctic hair grass, one of two flowering plants     9     grow in Antarctica. The bank ensures that if plants in the wild become extinct, they can be regrown from MSB seeds. There is no doubt that the MSB plays an     10     (extreme) important role in protecting the varieties of plant species on Earth.

It’s been nearly seven years since a group of volunteers grew flowers at What Cheer Flower Farm in Rhode Island, with a simple goal: get flowers into the hands of anyone in need. Best of all, each one of the tens of thousands of flowers that What Cheer grows and     1    (delivery) are completely free of charge.

What Cheer was founded by two gardeners     2    often gave away flowers from their own gardens and wanted the idea to grow. What Cheer     3     (regular)brings joy to people at local hospitals, wishing them a quick     4    (recover). “Seeing the     5    (satisfy)smiles on people’s faces who weren’t expecting it is great,” says Stephen Hogan Jr. from the farm.

What Cheer’s flower beds lie in an industrial neighborhood that once     6    (house)a knife factory. In May, the nonprofit was awarded     7    $500, 000 prize from the Environmental Protection Agency for its continued efforts     8    (bring)life to the once polluted land.

“Not only do we give this space back to the neighborhood,” says Achen, “but we are also an eco-friendly spot with the ability to help local insect and bird     9    (population), and that’ll only make people’s lives better.” What cheer indeed can cheer people     10    !What’s good about a flower is that it doesn’t need anything else. Your only job when someone gives you flowers is to enjoy them.

Scientists in Florida have     1     (successful) grown plants in moon soil collected during NASA’s Apollo missions (任务) in the 1960s and 1970s.

    2     NASA-supported study at the University of Florida used soil collected by astronauts    3     (grow) Thale Cress 2 (拟南芥). To compare results, plants were also grown in Earth soil    4     was made to be similar to moon soil. The researchers     5     (add) water and then seeds to the soil, as well as daily nutrients (营养物). After just two days, their growth started.

According to Professor Anna-Lisa Paul, all the plants looked the same     6     the sixth day. After the sixth day,     7    , it was clear that the plants growing in moon soil were not as healthy as those growing in Earth soil.

DNA testing showed that those Thale Cress 2     8     (plant) in the moon soil were under stress. It was also found that the plants grew in different ways in soil from different parts of the moon. The soil collected during the Apollo 11 mission had been on the moon’s surface several billion years     9     (long) than the other soil, and the plants grown in it were the weakest.

NASA Administrator Bill Nelson believes this research will help future space missions and that resources on the moon and Mars     10     (need) to develop food for astronauts living and working in space.

When it comes to cacti (仙人掌), we usually think of them living in very dry environments like deserts. However, the plant can now be seen in some Alpine regions of Switzerland and Italy - mountain areas     1     used to be covered by snow.

“In some parts of Valais, we estimate that the cacti can take     2     one-third of the surface,” Yann Triponez, a biologist working in Valais, Switzerland said. Although the plant     3     (be) present in the local area since the late 18th century, recent     4     (discover) showed that cacti are growing faster than usual. “When you have these cacti, nothing else grows,” Triponez said, stating that the plant     5     (cover) the soil and prevents other plants from taking root.

A warmer climate in Alpine areas can be seen     6     a reason for the change. The warming climate has been reducing snow coverage in the area,     7     (give) more soil for the cacti to grow on. It also leads to     8     (long) time periods for the plant to grow. Botanist (植物学家) Peter Oliver Baumgartner told The Guardian that     9     people may have the impression that cacti prefer hot climates, they can live in temperatures as low as-15C. Baumgartner also called on more attention     10     (pay) to local biodiversity since Valais has about two-thirds of the total plant species in Switzerland.

The record of the    1    (tall) tree in Asia has been refreshed this week, as a team of Chinese researchers announced     2    (recent) that they discovered a giant cypress(柏树)measuring 102.3 meters in Tibet.

The record-breaking high tree, called Cupressus torulosa(西藏柏木),    3    (find) at the national nature reserve of the Yarlung Zangbo Grand Canyon in Bome county, Nyingchi city, during a scientific investigation led by Peking University in May.

    4    (use) drones and laser radar to map the local cypress aggregation area, the team members confirmed the     5    (present) of the 102.3-meter tree. Besides, they detected a large number of trees over 85 meters high, including 25 over 90 meters. The findings have also contributed    6    the region having the highest density of giant trees in China and Asia after precision measurement, said Ren Yu,    7    is a team member from Peking University.

Mainly distributed in southeastern Tibet, Cupressus, torulosa has a narrow distribution area and     8    small population. Therefore, it has been listed    9    a national first-class protected plant.

The previous China tree height record     10    (hold) was an evergreen fir(常绿冷杉) measured at 83.4 meters by scientists in Tibet last year.

The Amazon rainforest is home to a great     1    (various) of plant life; however, its soil is    2       (surprising) poor in nutrients. In fact, the soil in the region cannot support agriculture for more than a few years. If a scientist is shown a report     3    (list) the nutrients of that soil, he or she will probably think that only desert plants can survive in it! Then why is the soil so poor in nutrients? For one thing, the rainy season has     4     impact on the soil. In this season, the water level can rise to more than 12 meters.     5     the water goes away, it takes away the nutrients in the soil. For another thing, due to the Amazon’s hot climate, it is difficult for the soil     6    (build) enough nutrients. Dead plants and animals     7    (break) down more quickly. The nutrients are soon taken in by the roots of the plants deep     8     the ground. As a result, most of the forest’s nutrients are locked up in the plants     9    (them), thus allowing them to grow at a(n)    10    (believable) speed.

Indoor plants add color and warmth to the home. Many houseplants     1    (be)easy to grow, but they must be given appropriate care.

The very first thing to consider when     2    (select)a houseplant is where you want to put it. Then match the space and lighting with the plant’s requirements. Do you have a big spot by a     3    (sun)window or a small space with little light? Next ask     4    (you)whether you are looking for a plant with beautiful green leaves     5     a flowering plant. Some flowering houseplants are seasonal while others will bloom year after year.

Watering properly is one of     6     most important parts of indoor plant care. Room temperature and tap water should be fine for most indoor plants, but remember not     7    (water)too much at a time, otherwise they will     8    (certain)get drowned.

Some plants grow well in warm, humid environments, while others prefer hot, dry climates. Of course, your home can’t be everything to every plant, but if you can take plant’s needs into     9    (consider), you can make sure that your plants are living     10     their ideal environment.

Apples are ready to pick when the skin color deepens and the fruit comes away     1     (easy) from the tree. The presence of windfalls (风吹落的果子) is a good     2     (indicate) that fruits are ready to pick. Not all apples are ready     3     the same time, so pick regularly as most of them are fully developed.

To pick an apple, cup it in your hand, lift, and twist gently. It should be separate from     4     (it) end. Always touch apples gently     5     (avoid) injuring them, and never tug (拽) an apple from the tree     6     you may damage the fruiting spurs (枝丫) or cause apples nearby to drop.

Early season apples are eaten best soon after     7     (pick) as they don’t store (储藏) well. Midseason apples will store for a few weeks, and late season apples should be good for up to six     8     (month). Apples chosen for storage must be in perfect condition. Check stored apples regularly and remove the ones that     9     (be) going soft, brown, or rotting,

Store your apples in a cool but frost-free, dark, well-ventilated place such as a shed or garage. Make sure they don’t touch, or else wrap them in newspaper. Different species store for different lengths of time — keep them separate and use those     10     have a shorter storage life sooner.