资源描述
Period 4 Developing ideas
课时作业(四)
[基础训练]
Ⅰ 单词拼写
1．This tool can be used in a ________ (多样化) of ways.
答案：variety
2．His public ________ (形象) is different from the real person.
答案：image
3．They went out for a walk on the rough ________ (小径，小道)．
答案：path
4．Fitness has now become an important ________ (要素) in our lives.
答案：element
5．The scientists will study the variety of trees in the wild and ________ (观察) which are fruiting.
答案：observe
Ⅱ 单句语法填空
1．She enjoys ________ (listen) to music in her spare time.
答案：listening enjoy doing sth. “喜欢做某事”。
2．I decided to concentrate all my efforts ________ finding somewhere to live.
答案：on concentrate ... on ... 为固定动词短语，意为“集中……于……”。
3．It is my deskmate ________ helped me with my English in time.
答案：who/that 本句为强调句型，被强调的部分是主语my deskmate，故填who/that。
4．With prices ________ (go) up so fast, we can't afford luxuries.
答案：going 在本句中的with复合结构中，prices和go之间存在主动关系，故填going。
5．________ the approach of winter, the sun shone brightly.
答案：Despite despite “尽管”，后接名词短语，作让步状语。
6．While visiting the lake, we took many photos ________ it.
答案：of take a photo of ... 为固定短语，意为“为……拍照”。
7．Staring directly ________ me, she didn't say anything about it.
答案：at stare at ... 为固定短语，意为“盯着……看”。
8．A car ran by me ________ a high speed of about 120 km/h.
答案：at at a speed of ... 为固定短语，意为“以……速度”。
9．He is in hospital, recovering ________ a heart attack.
答案：from recover from意为“康复”。
10．I don't know why you're so concerned—it isn't your problem ________ all.
答案：after after all为常用短语，意为“毕竟”。
[思维训练]
Ⅰ 阅读理解
A
As a gesture of friendship, Mayor Yukio Ozaki of Tokyo, Japan gave Washington D．C. a gift of more than 3,000 Japanese cherry trees on March 17,1912. Every spring, the cherry trees in Washington D．C. take bloom (开花), beginning one of the country's loveliest celebrations, the National Cherry Blossom Festival (March 17－April 15). Book your trip now to see this vibrant display of pink and white in this city full of history!
Washington D．C. Cherry Blossom InDepth Tour
Price: $45/person
Available: Mar. 25－Apr.15
Duration: 1 Day
Highlights: Visit Washington D．C.; experience the peak period of cherry blossom (April 8－12)
Itinerary: Guests will start to celebrate the National Cherry Blossom Festival and discover the beauty of cherry blossoms. Next, we will begin our sightseeing city tour including Lincoln Memorial, White House, US Capitol, Madame Tussauds Wax Museum, Washington Monument and International Spy Museum. Then visit the next tourist spot, the Jefferson Memorial. It's the best location to view the cherry blossoms. Finally, guests may board a Potomac River cruise to see the city from the water. Then tour ends.
Price Includes: Ground Transportation
Admission Fees：
Note: If you would like to join in the optional activities, please pay the fee in cash to the tour guide. You cannot buy the tickets on your own or use City Pass. The tour guide will arrange the tickets for the group.
篇章导读：本文是一篇应用文。文章介绍了美国国家樱花节一日游的时间、景点、花费和注意事项。
1．On March 25, tourists________.
A．experience the peak period of cherry blossom
B．have a discounted tour of a city full of history
C．enjoy the National Cherry Blossom Festival
D．witness the first day of the festival
答案：C 细节理解题。根据“Washington D．C. Cherry Blossom InDepth Tour”部分中的“Available: Mar. 25－Apr. 15”以及Itinerary部分的第一句可知，在3月25日，游客们可以享受国家樱花节，故选C。
2．What can we infer from the passage?
A．Japan presented cherry trees to attract tourists to Washington D．C.
B．The tour covers five tourist spots without admission fees.
C．Admission fees can be paid in cash or with City Pass.
D．Each tourist must choose at least one optional destination.
答案：B 推理判断题。根据Itinerary部分可知，城市旅游包括八个景点；再根据Admission Fees表格中的内容可知，“International Spy Museum”，“Madame Tussauds Wax Museum”和“Potomac River Cruise”这三个景点是需要付费的，所以有五个景点不需要付费，故选B。
3．It costs ________ for a 16yearold student and his grandpa (aged 67) to go on the tour, with the wax museum included.
A．$110 B．$136
C．$133 D．$127
答案：C 细节理解题。根据“Price: $45/person”以及表格中的“Madame Tussauds Wax Museum (optional)” Adult收费为$23, Senior收费为$20 (Over 65 yrs)可知，一位十六岁的学生和他的爷爷参加这次旅行，包括蜡像馆，价格是45×2＋23＋20＝133，故选C。
B
Even if trees cannot walk, they are still on the move.
In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests stop and the treeless tundra (冻原) starts has been moving northward. Trees growing along the tree line must protect themselves from the cold wind. To do this,_plants tend to grow horizontal (水平的) branches low to the ground. The energy it takes for trees to grow this way means they don't have enough energy to make seeds.
But as Earth's climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. And with all that leftover energy, these trees have started producing more seeds. This happens especially in places where white spruce (白云杉) grows.
White spruce, which is a North American tree, is quite able to produce a lot of seeds, which can move long distances in the wind. When wind－blown seeds end up on the tundra beyond the tree line, they eventually can sprout (发芽) new trees. This explains how a forest can move. Of course, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.
New trees will provide shelter for some snow. Keeping the sun's rays from making the white surface disappear. Instead, the trees absorb the sun's heat. This warms the surrounding air. The extra warmth encourages even more trees to produce seeds. That further boosts a forest's ability to expand. In addition, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the soil below, which encourages trees to grow. The recent rise of temperatures has helped more trees grow past the tree line. People worry about impacts on the animals that depend on frozen conditions for food and shelter.
篇章导读：本文是一篇说明文。文章介绍了北极地区森林北移的原因，以及全球变暖对树木的影响。
4．What is the main cause of the trees in the Arctic moving northward?
A．The shrinking of northern tundra.
B．The abundant resources in the north.
C．The fierce and cold wind.
D．The rising temperature.
答案：D 细节理解题。根据第二段第二、三句“Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests stop and the treeless tundra (冻原) starts has been moving northward.”可知，在北极地区，温度的上升比世界上任何其他地方都要快得多。当这一切发生时，标志着森林结束和冻原开始的树线一直向北移动。同时结合第四段中对森林北移的解释，可推知在北极树木向北移动的主要原因是温度升高，故选D。
5．What does the underlined word “this” in Paragraph 2 mean?
A．To produce more seeds.
B．To move northward.
C．To respond to the climate change.
D．To protect themselves from the cold wind.
答案：D 推理判断题。根据第二段第四句“Trees growing along the tree line must protect themselves from the cold wind.”沿着林木线生长的树木必须保护自己免受寒风的袭击。此处this指的是保护它们自己免受冷风的袭击，故选D。
6．The passage is most probably taken from ________.
A．a fashion magazine B．a health report
C．a science report D．a children's magazine
答案：C 推理判断题。根据本文内容可知，主要介绍北极森林北移的原因以及全球变暖对树木的影响，属于科学研究范畴，应该归于科学报告类，故答案选C。
Ⅱ 读后续写
阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事。
A long time ago, there lived a very, very wise king. He was so wise that he knew the ways of almost everything.
Then one day, a tiny_bee lost her way and flew right into the_king's_beautiful_palace. The little bee begged the king, “Please, let me live, and I will serve you some other day.” The king was amused to think a tiny bee could one day serve such a powerful king. He released the bee and said, “Be on_your_way,_for I need nothing from you today.”
Many days later, the_people_of_the_kingdom filled the palace yard. A queen was coming to visit from a faraway land. She heard many people claim this king was very wise. She had to know for sure that they were not all just lies.
“I hear you are wise，” she said. “You are wiser than the rest. Would you be willing to put your wisdom to a test？” The king agreed, and she did her best with puzzles, tricks, and difficult tests, but all in vain (徒劳)．
Now the_queen was quite angry at the king's show of wisdom, and was more determined to find a way to trick him. “We must have a test，” she challenged her advisors, “to prove this king's a fool, not to prove he is wiser！” So they came up with a plan that would surely not fail. It indeed was a test to make the others look pale. They ordered the queen's craftsmen (工匠) to make ninetynine flowers, fake (假的) through and through, but looking so real. When they are finished, even the queen could not tell they were fake. She was sure the king would make the very same mistake. And then from the king's garden, she took just one real_flower,_and cleverly hid it among all the others.
注意：
1．所续写短文的词数应在150左右；
2．至少使用5个短文中标有下划线的关键词语；
3．续写部分分为两段，每段的开头语已为你写好；
4．续写完成后，请用下划线标出你所使用的关键词语。
Paragraph 1：
The king, not wanting to be fooled by this queen, accepted the challenge.
Paragraph 2：
The tiny bee quickly flew over the flowers and in no time at all found the real flower.
写前导读：本文是一篇记叙文。这是一篇童话，主要描写小蜜蜂如何帮助国王赢得胜利的故事。
[精彩范文]
Paragraph 1：
The king, not wanting to be fooled by this queen, accepted the challenge. This competition between the king and the_queen attracted public concern. All the_people_of_the_kingdom expected the result with excitement. The wise king, of course, didn't want to let his people down, so he tried to figure out a way to overcome this difficulty. At this time, the tiny_bee came to offer his help. He said, “It's time that I serve you and I promise I would find the real_flower for you.” The king had no choice but to trust him. So he carried the bee to face these flowers.
Paragraph 2：
The tiny bee quickly flew over the flowers and in no time at all found the real flower. When the king put this flower in front of the queen, she and her craftsmen were all shocked by what they saw. The queen was impressed by his wisdom completely and asked him his secrets of success. The king said nothing, looking at the tiny bee with a smile.
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