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Children who appear intelligent and have normal sight and hearing may nevertheless have learning disability such as dyslexia, difficulty in reading; dysgraphia, difficulty in writing; dyscalculia, difficulty with numbers;  and auditory-memory problem that (25)________the child from remembering what has  just been said.  Considered an "invisible" barrier, such learning disabilities can be detected (26)___________ alert parents before the children go to school. If the child at about thirty months is not developing normal language skills,  something is amiss.  A child who cannot do puzzles or put pegs in holes lacks perceptual-motor skills. Kindergarteners should (27)__________ the ABCs.  First - graders may commonly reverse their letters, writing a d or a b, (28)__________ if they are still doing this at the start of second grade, they should be tested for learning disabilities. Proper and early treatment is essential.

Question 25: A. avoid           B. help                                                           C. encourage                                                D. prevent

Question 26: A. in                  B. at                                                                C. by                                                              D. with

Question 27: A. recognizable                B. recognize                C. recognizably        D. recognizability

Question 28: A. but                B. When                                                        C. Although                                                 D. Because

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