Compared with production errors that can be understood by reading what they write or listening to what they speak, reading comprehension errors are much more difficult for the teacher to detect unless they ask questions or the teacher reads misinterpreted passages in their native language.

Through the experiments and the analysis of the previous studies, three major factors are thought to inhibit the WLAN to be more efficient, they are transmission collision, transmission error, and handover between different wireless access points.

From the perspective of comparative law,it is a disputed question that whether wrongful birth constitutes tort liability so far.

In the wrongful birth action,the doctor failed to check out the fetus with serious diseases because of his negligence,which made the mother bear disabled children,which cost the parents a lot of money on medicine,on looking-after,and on the tuition of special education for the disabled children,and made the parents suffered huge emotional damages.