225.
(A) Because of
(B) As for
(C) In addition to
(D) Instead of (答案B)About ninety percent of human beings living on earth rely mostly on their right hands. They use their right hand to write and draw, to hold chopsticks and forks, and ___226___ basketball and computer games. ___227___, the other ten percent prefers to reach out to the world ___228___ their left hand. These left-handers usually ___229___ a lot of difficulties when using tools designed mainly ___230___ right-handers. ___231___, left-handedness was considered strange or even a disease in the past. In fact, left-handed people are not only healthy and natural, but sometimes as ___232___ as da Vinci and Napoleon. Some scientists think left-handedness is due to heredity遺傳, while ___233___ say it results from hormones. No matter what the causes of left-handedness may be, remember to show your ___234___ to left-handers when you meet them. Better yet, you can join many left-handers ___235___ Left-Handers’ Day on August 13 every year! Left-handers will likely be happy to have your support.