考博英语辅导:考博英语阅读理解习题(26)
Let children learn to judge their own work. A child learning to talk does not learn by being corrected all the time; if corrected too much, he will stop talking. He notices a thousand times a day the difference between the languages he uses and the language those ar…...
考博英语辅导:考博英语阅读理解习题(27)
Which is safer-staying at home,traveling to work on public transport,or working in the office? Surprisingly, each of these carries the same risk,which is very low. However,what about flying compared to working in the chemical industry?Unfortunately,the former …...
考博英语辅导:考博英语阅读理解习题(29)
A controversy erupted in the scientific community in early 1998 over the use of DNA (deoxyribonucleic acid ) fingerprinting in criminal investigations. DNA fingerprinting was introduced in...