问题描述：
[单选]
Last year for science fair， my teacher said we should think of how to solve an everyday problem． When you have cancer， the intravenous pole （静脉输液架） are an everyday problem． I started thinking of making a backpack for kids so they could get around and play and go outside while they"re getting chemo （chemo is short for chemotherapy（化疗）． I especially want to make chemo easier for kids． I know how frightening it can be． For my project， I got a backpack and made a model． I took a small box and made it look like an intravenous machine． I had a small pole sticking out of the top， where you"d hang the bag of medicine． Then I painted it to make it look nice．What does the paragraph mainly talk about？
A．What the author did to raise money.
B．How the author made the backpacks.
C．What the author got from her teacher.
D．How the author got an intravenous machine.
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上一篇：下列关于社区居民健康档案管理描述错误的是衡不（）
下一篇：Ireland has had a very difficult history． The problems started in the 16th century when English rulers tried to conquer （征服） Ireland． For hundreds of years， the Irish people fought against the English． Finally， in 1921， the British government was forced to give independence to the south of Ireland． The result is that today there are two "Irelands"． Northern Ireland—in the north， is part of the United Kingdom． The republic of Ireland—in the south， is an independent country． In the 1840s the main crop， potatoes was affected by disease and about 750，000 people died of hunger． This， and a shortage （短缺） of work， forced many people to leave Ireland and live in the USA， the UK， Australia and Canada． As a result of these problems， the population fell from 8．2 million in 1841 to 6．6 million in 1851． What is the first paragraph mainly about？
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