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第四课时　Section B(Vocabulary in Use 2a－2c)
答案见活22
Ⅰ.根据句意及首字母或汉语提示写出单词
1．【新素材　太空任务】The hot space missions in 2025 make us curious about how the u　　　　 formed and whether there are other life-friendly planets.
2．Volunteers fixed the small h　　　　 in the community's green fence and planted ivies(常春藤) around it.
3．The 　　　　 (女儿) often help their mums with the chores at home.
4．It takes great 　　　　 (勇气) to stand up and share your creative ideas in class.
5．The young Chinese scientist is a 　　　　 (先驱)in developing low-energy display technology.
Ⅱ.用括号内所给单词的适当形式填空
1．【新素材　数字乡村】　　　　 (social) supports digital village development, letting rural students attend online classes with city teachers.
2．Emma taught 　　　　 (she) to make short videos about local traditional crafts and shared them online.
3．You have to reconfirm your 　　　　 (fly) 24 hours before travelling.
4．The 　　　　 (chemistry) in the local hospital advised us to wash hands often with mild soap to keep healthy.
5．A team of 　　　　 (research) visited our school and shared how they study plants that can grow in dry areas.
Ⅲ.根据句意填入适当的单词
1．Lisa chose to join the school's science club 　　　　 she is interested in doing small experiments.
2．Recent discoveries 　　　　 ocean life tell us that many sea creatures are in danger.
3．The small town is known 　　　　 its fresh fruit and beautiful countryside scenery.
4．After years of hard training, his elder brother finally became 　　　　 pilot and flew planes safely.
5．　　　　 number of people who use shared bikes to go to school is increasing.
答案见活22
短文填空【主题：人与社会　著名人物】
　　阅读下面短文，在空白处填入一个适当的单词或填入括号内单词的正确形式。
　　Do you know the Beijing-Zhangjiakou Railway has a long history of more than 110 years It is China's 1.　　　　 (one) self-built railway. At that time, China was poor. Nobody 2.　　　　 (believe) China could build its own railway. That seemed impossible 3.　　　　 any help from other countries. But Zhan Tianyou and his team made it by 4.　　　　 (they) in 1909.
　　When the work started, Zhan and his team 5.　　　　 (meet) many problems. The 6.　　　　 (bad) one among the problems was a big mountain. 7.　　　　 mountain cut the railway in half. It seemed like stopping the railway from being one successful line. At first, Zhan Tianyou and his team didn't know 8.　　　　 to deal with it. But they didn't give up and tried many 9.　　　　 (program). At last, they found a new way to solve the problem 10.　　　　 (complete). Later, Zhan Tianyou continued 11.　　　　 (work) on four more important railways in less than ten years. Since then, Zhan 12.　　　　 (become) famous all over the world.
Although the Beijing-Zhangjiakou Railway is too old 13.　　　　 (keep) working now, it is not only a railway for transportation but also a symbol of encouragement for us. We should always remember it 14.　　　　 it tells us when we try our best together, we can do amazing things and create a 15.　　　　 (good) future.
详解答案
基础达标
Ⅰ.1.universe　2.holes　3.daughters
4．courage　5.pioneer
Ⅱ.1.Socialism　2.herself　3.flight
4．chemist　5.researchers
Ⅲ.1.because　2.about　3.for　4.a
5．The
能力提升
【语篇解读】本文介绍了中国第一条自建铁路——京张铁路的历史，讲述了詹天佑及其团队克服困难修建铁路的故事，以及该铁路的意义。
1．first　2.believed　3.without
4．themselves　5.met　6.worst　7.The
8．how　9.programs　pletely
11．working　12.has become
13．to keep　14.because　15.better

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