Section B Directions: After reading the following passage, you will find 5 questions or unfinished statements. For each question or statement there are 4 choices marked A ) , B ) , C) and D ) .You should decide which is the correct answer. The strange, close understanding between twins is a familiar enough phenomenon. Often they seem to understand each other and share each other's emotions to such an extent that one suspects some kinds of thought communication. What is not so widely known is that this special relationship often acts as a brake ( 障碍 ) on twins' intellectual development. As they are partly isolated in their own private world, twins communicate less with s than do other children. The verbal ( 口头的 ) ability of a four-year-old twin is typically six months behind that of a non-twin. The problem can be particularly severe in a deprived home, a one-parent family for example, where there is little stimulation for children anyway. Such children, while capable of mutual comprehension in a private language, often remain incomprehensible to outsiders and thus at a severe educational disadvantage. The only solution to the problem, cruel though it may seem, is to separate the twins, thus forcing them to acquire ordinary speech helped and guided by sympathetic ( 富有同情心的 ) parents and teachers. 16. Many people don't know that ________. A) twins understand each other very well B) twins are slow to learn to talk C) twins are unlikely to do less well at school than other children D) there exists more communication between twins 17. "A deprived family" may refer to ________. A) the family where the parents are divorced B) the family which is in poor condition C) the family where the children are less educated D) all of the above 18. What's the reason for twins to be at a disadvantage in their intellectual development? A) They can only understand their own private language. B) They communicate with outsiders less than non-twins. C) There is little stimulation for them. D) s don't like to talk with them. 19. The author probably feels that twins' problem ________. A) cannot be solved because situation is very cruel B) can be solved because twins will be separated C) cannot be solved unless the twins are forced to live in an ordinary environment D) can be solved if the s communicate with them more often 20. The writer mentions all of the items listed below except ________. A) twins can help each other B) twins share each other's emotions C) twins are able to understand each other in a private language D) twins communicate less with their parents