根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

　　(2015·太原市高三二模)

　　iPads vs. Textbooks

　　What if you could have your whole backpack at the touch of your fingertips? In the first month of the Apple iPads release, 25million were sold! People all over the world use iPads for all sorts of different things, but one of their finest qualities is the ability to be a textbook. __1__

　　To begin with, iPad are less expensive. Textbooks become outdated and schools have to buy new books, but with an iPad schools can update them for free. __2__ Schools don't have to spend $500 every year for iPads because they last a while and can be updated.

　　__3__ Students usually have multiple classes, which results in multiple textbooks. Heavy backpacks filled with books can cause back problem. A solution to that is an iPad, which only weighs 1.33 pounds and can hold all of a student's textbooks.

　　Third, schools should get rid of their textbooks and get iPads because they have more capabilities. Some might think all of the apps are distracting, but the apps actually make iPads more efficient. __4__ Textbooks cannot do those tasks, but iPads can easily do them with just a tap of the fingertip.Lastly, iPads are a better choice for schools instead of textbooks because these devices allow students to access their learning anywhere at any time. __5__ With iPads, they find it easier to get their homework done.

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