B
Do you like ice and snow? If your answer is yes, Harbin is a good place for you.
Harbin is the capital city of Heilongjiang in China. Harbin is famous for its cold winter. The winter here often starts in November and ends in late March of the next year. And sometimes it can reach $-42°\mathrm{C}$! It snows a lot.
Every year, people from all over the world come here to join the famous Harbin Ice and Snow Festival. The festival often starts in January. During the festival, visitors can see many big and tall ice and snow sculptures（雕塑）, skate and ski（滑雪）. They can also play exciting ice games there.
Harbin is over 800 years old. Visitors can see many special houses in the city. If you take a walk down Central Street, you can see many nice European-style（欧式的） houses. People also call this street the “Paris in the East”.
If you like ice and snow, you will love Harbin. Enjoy yourself here.
()41. How long does the winter in Harbin often last?
A. For about two months.
B. For about five months.
C. For about six months.
D. For about eight months.
()42. What can people do during the Harbin Ice and Snow Festival?
①Go skiing.
②Go skating.
③Play water games.
④Enjoy ice and snow sculptures.
A. ①③
B. ①②④
C. ②③④
D. ③④
()43. Why is Central Street called the “Paris in the East”?
A. Because of its great sculptures.
B. Because of its European visitors.
C. Because of its nice weather.
D. Because of its European-style houses.
()44. From the passage, we can know .
A. Harbin is famous for Harbin Ice and Snow Festival
B. only Chinese people come to Harbin Ice and Snow Festival
C. we can see many ice and snow sculptures in summer in Harbin
D. we can visit many ice and snow sculptures on Central Street
()45. What's the best title for the passage?
A. Harbin—Paris in the East
B. Harbin—the Ice City
C. The Famous Central Street
D. The Coldest City

41. B 【解析】细节理解题。根据“The winter here often starts in November and ends in late March of the next year.”可知，这里的冬天通常从11月开始，到次年3月末结束，大约为5个月。故选B。
42. B 【解析】细节理解题。根据“During the festival…They can also play exciting ice games there.”可知，在节日期间，游客可以看到许多又大又高的冰雪雕塑、滑冰、滑雪，还可以玩刺激的冰上游戏。故选B。
43. D 【解析】细节理解题。根据“If you take a walk down Central Street…the ‘Paris in the East’.”可知，中央大街被称为“东方巴黎”是因为它有许多欧式风格的房屋。故选D。
44. A 【解析】推理判断题。根据“Every year, people from all over the world come here to join the famous Harbin Ice and Snow Festival.”可知，每年世界各地的人们都会来参加著名的哈尔滨冰雪节，说明哈尔滨因哈尔滨冰雪节而闻名。故选A。
45. B 【解析】标题归纳题。根据全文内容可知，本文围绕哈尔滨的寒冷冬季、著名的冰雪节及中央大街的特色展开，核心是突出哈尔滨的冰雪特色。故选B。

C
①Do you know "huinantian", or ongoing(不间断的) wet weather?
②"Huinantian" is a special kind of weather in Southeast China in spring. Before it comes, there are usually a few cold days, with a temperature below(在……以下) $12°\mathrm{C}$. After the cold air goes away, warmer air quickly comes and gets cooler, making a lot of water vapour(水蒸气). So you can see small water drops on windows and walls.
③Ongoing wet weather makes it easy for bacteria(细菌) to grow. Food goes bad easily, clothes stay wet, and sofas can get moldy(发霉的). TV sets may break down when they get wet inside. It's dangerous because you may get an electric shock(电击) when turning them on.
④▲ So catching a cold(感冒) is common during this time because the temperature changes quickly. It's best for us to look after ourselves well.
( )46. How does the writer(作者) begin the passage?
A. By giving an example.
B. By giving some numbers.
C. By asking a question.
D. By telling a funny story.
()47. Which is the right order(顺序) of the formation(形成) of "huinantian"?
a. Warmer air quickly comes.
b. The cold air goes away.
c. There are a few cold days.
d. Warmer air gets cooler.
A. c→a→b→d
B. c→b→a→d
C. b→c→a→d
D. b→a→d→c
()48. From Paragraph ③, we can know .
A. it is dangerous to turn on TV sets when they get wet
B. we can keep food fresh easily in ongoing wet weather
C. we can't watch TV inside in ongoing wet weather
D. it is hard for bacteria to grow in ongoing wet weather
()49. Which sentence can we put in the "▲"?
A. The weather changes very quickly.
B. The bad weather goes away quickly.
C. Wet weather sometimes happens on a cold winter.
D. Wet weather also makes people feel sick(生病的).
()50. Which of the following shows the structure(结构) of this passage?
A. ①/②③/④
B. ①②③/④
C. ①/②/③④
D. ①②/③/④

46. C 【解析】开篇方式题。根据“Do you know ‘huinantian’, or ongoing wet weather?”可知，文章通过提出一个问题来开头。故选C。
47. B 【解析】句子排序题。根据“Before it comes, there are usually a few cold days…comes and gets cooler”可知，“回南天”来临前，通常先有几天寒冷的日子，之后冷空气离开，接着暖空气迅速到来，最后暖空气变凉，因此顺序为c→b→a→d。故选B。
48. A 【解析】细节理解题。根据“TV sets may break down…when turning them on.”可知，当电视机内部受潮时，打开它可能会导致电击，是很危险的。故选A。
49. D 【解析】句子还原题。根据“So catching a cold is common during this time because the temperature changes quickly.”可知，因为气温变化快导致这段时间容易感冒，此处应表达回南天容易使人生病，引出下文。故选D。
50. C 【解析】篇章结构题。根据全文内容可知，第①段以问题引出“回南天”这一话题；第②段介绍“回南天”的形成；第③和④段介绍“回南天”带来的影响。故选C。