单选题
This is specially designed education for children who are either partially sighted or blind. Vision impairments are diagnosed by medical doctors who examine the physical structures in the eye and evaluate the child's ability to see shapes of different sizes at various distances. In the United States, approximately 12 out of 1,000 children receive some form of special education because of visual impairments.
Partially sighted children may use a variety of adaptive aids to see more clearly and to read printed text. These aids include magnifiers, which may be attached to eyeglasses; electronic systems for enlarging print and making it easier to see; and large-print books. Blind children usually are taught to read Braille, a system of raised dots embossed on paper and read by touch. In the past, turning conventional books into pages of Braille was very time-consuming, and the large books required enormous storage areas. However, most Braille texts are now done electronically. Many students read paperless Braille with the aid of machines that mechanically raise the dots in a small panel as the reader progresses through the text. Because Braille cannot be read very rapidly, many blind students prefer to listen to books being read on tapes. Some students also use reading machines equipped with cameras that scan lines of print, which computers then convert to synthesized speech.
Many blind and partially sighted children receive orientation and mobility training as a part of their education. Specialists teach them how to travel independently in their schools and communities, often with an aid, such as a cane.
Most children with vision impairments are educated in schools within their communities. Vision specialists may provide special materials and equipment, help teachers and classmates understand the children's condition, and possibly provide additional instruction. The specialists may also teach partially sighted children how to use their remaining vision more effectively and instruct them in the use of adaptive aids.
Some children with vision impairments attend special schools designed to meet their particular needs. Like boarding schools, these schools often provide residential services as well as educational programs. They also have specially designed facilities, which may not be found in neighborhood schools, for blind children to participate in athletics and other activities.
The education of many children with vision impairments is further complicated by their having other disabilities, such as physical disabilities, developmental impairments, or hearing loss.

单选题 Various adaptive aids are used to ______.
A. cure children of their vision impairments
B. help children see more clearly, read books and so on
C. teach children how to turn Braille into synthesized speech
D. teach children how to use their remaining vision more effectively

单选题 Large-print books are those books which ______.
A. are printed with large pages
B. have large words in them
C. can be read by using a magnifier
D. can be read with the aid of machines

单选题 Many blind students prefer listening to books because ______.
A. these books can talk by themselves
B. the synthesized speech is very interesting
C. this can save time
D. these students are lazy

单选题 "Orientation and mobility training" is meant to teach blind and partially sighted children ______.
A. how to complete their education
B. how to use a cane
C. how to move around without other people's help
D. how to help other people to travel independently

单选题 It may be good for children with vision impairments to live in special schools because these schools ______.
A. can save them the trouble of coming from and going back to their homes
B. are built of nice wooden boards and so are clean and comfortable
C. have educational programs for the blind
D. offer training in vocational skills rather than academic skills