2. 外语
  3. When it is difficult to find space to build more houses and offices, we automatically build upwards—we build skyscrapers. Now,

When it is difficult to find space to build more houses and offices, we automatically build upwards—we build skyscrapers. Now,

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问题    When it is difficult to find space to build more houses and offices, we
automatically build upwards—we build skyscrapers. Now, some farmers
are farming upwards too.
   Vertical farms save space by growing plants inside buildings on special 【M1】______
designed racks. Each rack can hold many plants and this increases
the amount 【M2】______
of food produced. Hydroponics is a system where special water is giving to 【M3】______
the plants, water which contains everything the plant needs to grow. In
traditional farming, plants grow in the ground, and in vertical farms plants 【M4】______
grow in pots and are only fed by special water. Some farmers have racks 【M5】______
attached to elevators. Because the elevators are always moving, so the
plants are 【M6】______
always moving too. By this way the plants receive more sunlight and grow
better. 【M7】______
Vertical farming works well because farmers have full control for the 【M8】______
growing conditions. They control temperature, food and water, so vertical
farmers can grow plants all year round and almost anywhere in the world.
Furthermore, vegetables grown in the city do not have to transported as 【M9】______
far to reach the shops. This means the food is delivered fresher and with
less transport, so there is more pollution. 【M10】______
【M6】
选项
答案删掉so
解析 原文叙述，“因为电梯总是在移动，所以植物也总是在移动”。because与so在句中不能同时出现。因此，将so删掉。
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本试题收录于： D类竞赛（专科）题库大学生英语竞赛（NECCS）分类
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D类竞赛（专科）

大学生英语竞赛（NECCS）

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