1 . 语法填空

The Silk Road was a network of trade routes     1    (connect) China and the Far East with the Middle East and Europe.     2    (establish) when the Han Dynasty in China     3    (official) opened trade with the West in 130 BCE, the Silk Road routes remained     4     use until 1453 CE, when the Ottoman Empire boycotted (抵制) trade with China and closed them. Although it’s been nearly 600 years since the Silk Road     5    (use) for international trade, the routes had a lasting impact on commerce, culture and history that resonates even today.

The Silk Road may have formally opened up trade between the Far East     6     Europe during the Han Dynasty,     7     ruled China from 206 BCE to 220 CE. Han Emperor Wu sent imperial ambassador Zhang Qian     8    (make) contact with cultures in Central Asia in 138 BCE, and his reports from his journeys conveyed valuable     9    (inform) about the people and lands that lay to the West. But the transport of goods and services along these routes     10    (date) back even further.

2 . 根据课文内容填空

Some people believe that space exploration is a waste of time and the     1    . Then why do humans still explore space? 

It is humans’     2     about the unknown that leads humans to explore space continuously. Space exploration helps better understand the     3     and the origin, evolution and future of the     4    . Humans’ lives have become     5     through space exploration, which will probably provide     6     for humans in many areas. Space exploration can bring great     7     and attract young to take up     8     concerning it. Wonders in space exploration can provide children with     9     and motivate them to become the scientists and     10     of the future.

3 . 课文内容填空

In 2016, Shennongjia made     1     onto the UNESCO World Heritage List. It meets two criteria     2     (require) by the list. Firstly, it is apparently one of the most “complete” natural     3    (area) in the world,     4     some plants and animals have survived millions of years. Secondly, Shennongjia     5     (have) incredible biodiversity. It is     6    (challenge) to look after so many species. But scientists make great efforts     7    (protect) them. The local people also play an important part, and they live     8     harmony with nature.

4 . 课文内容填空

Lauren Bath, a photo blogger, has attracted many fans. In 2013, she     1    (离开, 离任) her     2    (以前的)job as a chef and chose a different     3    (专业, 行业). In other words, she     4     her hobby     5    (把……看作) a career. From then on, she has spent much time travelling the     6    (本地的) Australia. Of all the places in Australia she visited, Broome in the Kimberley region is her favourite     7    (目的地). She loves to photograph the scenery, as well as animals, such as     8    (袋鼠) and dolphins. When it comes to environmental issues, she hopes to stop people from feeding wild     9    (鳄鱼). And she    10    (决定) to make people aware of the problem. She hoped that her dream would     11    (实现) one day.

5 . 语法填空

As one of the most well-known tourist destinations in China’s Guangxi Zhuang Autonomous Region, Li River     1    (attract) millions of visitors each year.     2    , the river’s water quality has suffered greatly     3     increasing tourists, many of     4     threw garbage into the river. Previously, many tour boats,     5     number of commercial and industrial     6     (enterprise) as well as the rising local population led to severe water quality issues,     7    (cause) a decrease in the number of fish species. Luckily, many measures have been taken     8    (restore) the river’s original beauty. It’s believed that the beauty of the Li River     9    (preserve) for generations to come. With the policy of “Water Ten Plan” and the “River Chief System”, China’s waterways are heading towards a clean and     10    (sustain) future.

6 . 课文内容填空

As we know, Earth is getting warmer and warmer,     1     results in melting ice and rising sea levels. In 2013, a dead polar bear     2    (find) on Norway’s Arctic island of Svalbard. Experts said that it was low sea-ice levels     3    (cause) by climate change     4     killed the polar bear. Scientists often mention that the “man-made” greenhouse effect is a big problem.    5     rise in temperature has led to an increase in extreme weather and natural disasters worldwide,     6    (cause) serious damage and costing human lives. The further global warming resulting     7     the continued greenhouse gas emissions     8    (require) the attention of people all over the world. Governments need to make policies and take measures     9    (reduce) greenhouse gas emissions. As individuals, we should also reduce our “carbon footprint” by restricting the amount of carbon dioxide our     10    (lifestyle) produce.

7 . Some new comets have been discovered accidentally by amateur (业余的) astronomers. Surprisingly a few bright comets have been discovered with the naked eye (肉眼) by members of the general public. However, a great number of comets are found by comet hunters carrying out telescope searches of chosen areas of the night sky.

As the movement of all comets is directed around the Sun and because these bodies brighten as they move towards the Sun, there is a greater possibility for the discovery of a new comet in the skies towards the Sun rather than away from the Sun's direction. This means that searches should be put on the western sky after evening light and on the eastern sky before morning light.

From the astronomical point there is no time during the year which is the best for the discovery of new comets. A search can be done at any time providing there is no bright Moon.

Studies done on the discovery conditions of comets discovered before show that more comets have been discovered in the morning sky than in the evening sky. Thus the smart comet hunter should make sure that morning activity receives as much if not more attention than any evening effort.

In recent times, the use of advanced CCD technology to discover objects close to the Earth will in the future greatly reduce the chances of new comets being found with small telescopes. An example of the new technology is the very successful LINEAR program operating in New Mexico, However, until a similar system is based in the southern half of the Earth there will continue to be chances for the discovery of new comets which come from the south.

1. What are comet hunters advised to do?

A．Look away from the Sun.

B．Stay where there's bright light.

C．Face the western sky in the daytime.

D．Turn to the east in the early morning.

2. What do we know about the time for the discovery of new comets?

A．Days when they're close to the Earth are great chances.

B．Certain fixed days are best for watching comets.

C．Every day is the same if there's no bright Moon.

D．Days with the Moon should never be missed.

3. Which of the following is a smart idea for comet hunters?

A．Paying more attention in the morning than in the afternoon.

B．Being equally serious both in the morning and afternoon.

C．Being more relaxed in the morning than in the afternoon.

D．Forming a habit of working only in the morning.

4. What can be inferred about the CCD technology?

A．It's similar to a telescope.	B．It'll disappoint comet hunters.
C．It's spreading all over the world.	D．It'll make comet hunters feel lucky.