C

　　Antarctica's ice white environment is going green and facing other unexpected threats.Scientists say that as temperatures go up in the polar area, invading (入侵) plants and insects, including the flies, cause a major threat.

　　More and more of these invaders, in the form of larvae（幼虫) or seeds, are surviving in coastal areas around the South Pole, where the temperature has risen by more than 3℃ over the past three decades. Glaciers have melted, exposing more land which has been occupied by mosses that have been found to be growing more quickly and thickly than ever before---providing potential green homes for invaders.

　　"The common house flies are a perfect example of the problem the Antarctic now faces from invading species," said Dominic Hodgson of the British Antarctic Survey. "It comes in on ships, where it exists in kitchens and then at bases on the continent. It now has an increasing chance of surviving in the Antarctic as it warms up, and that is a worry. Insects like the house flies carry bacteria that could have a deadly effect on native lifeforms."

　　The Antarctic has several native species of insects. Together with its native mosses these are now coming under increased threat from three major sources: visiting scientists increasing numbers of tourists and global warming. However, it is global warming that is the main driver of the greening of Antarctica.

　　In 2015. more than 38, 000 tourists visited Antarctica. "These tourists are often very careful about not leaving waste or having mud. But they could carry seeds or larvae on their boots when they set foot on the Antarctic, " said Hodgson.

　　More and more invasive insects and plants have been found on the Antarctic and have required removal. "The insects and plants that are native to Antarctica have survived there for thousands of years," said Hodgson, "We have got to act now if we want to save the environment."

27. What does the underlined word "mosses" in paragraph 2 refer to?

　A. House flies. B. Coastal areas. C.A kind of plants. D. A kind of animals.

28. What is the main cause of the Antarctic going green?

　A. The arrival of scientists. B .The increasing number of visitors.

　C. The rapid spread of native planting. D. The rising temperature around the world.

29. What do we know about the house flies in the Antarctic?

A. They are native species to the Antarctic.

B. They will die out because of the freezing weather.

C. They come to the Antarctic from nearby islands on their own.

D. They severely influenced plants ,insects and others native to the Antarctic.

30.What's the best title for the text?

A.The Antarctic Is Becoming Green and Energetic

B. Various Threats Are Putting The Antarctic At Risk

C. More and More Scientists Get to Explore the Antarctic

D. Global Warming has Caused the Temperature in the Antarctic to Rise up

　　第二节 （共5小题；每小题2分，满分10分）

　　根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项）

　Exploring somewhere new can bring us adventurous experiences. With the proper technology, we can make full use of our time on the road. Google Maps is just this kind that helps make trips easier. People most commonly use Google Maps for directions from one place to another. It offers many other kinds of travel tools.And, how do Google Maps work ? 31

Project and share a road trip route.

　　When we are traveling on a road trip, we do not have to plan each part of the trip separately with Google Maps._32 Besides, we can share our journey with others. After we have planned our route, click share or open the menu and click" share or insert map "to share our route with others.

33

　　When we are traveling, we may not always have access to the Internet, or we may not want to pay international charges for using our phone in other countries. The good news is that we can still use Google Maps even without the Internet. We can download a map from Google Maps to our phone.

Find the best places in town.

　　34 We can ask Google Maps for recommendations. After we search for a city in Google Maps, click" Nearby" to find the top- rated restaurants, hotels, pubs, coffee shops, and more.

Share our current position with friends.

　　Thanks to a recent Google Maps update,we can now share our position with our friends. 35 For example, using Google Maps for a lonely place, we can share our route with friends so that they can locate a general position where we stay and join us.

A. Is there any place to explore?

B. Want to know the best local places?

C. Here are 4 top tips for using Google Maps.

D.Save our maps for off-line use.

E. Google Maps can offer us all kinds of conveniences.

F. We can search for the whole trip in order to plan our route more efficiently.

G.During exploring a totally strange area, there is no need to worry about losing way.

　　　第三部分：完形填空(共20小题；每小题l.5分，满分30分)

　　阅读下面短文，从短文后各题所给的四个选项(A、B、C、和D)中，选出可以填入空白处的最佳选项，并标在答题卷的相应位置。

If we redouble our efforts, our dream will come true.Chen zuobin had 36 for 13 years already.Finally, he decided to become a 37 again. Born in a mountain village in Anhui