According to South Koreans new visa regulations, native speakers of English who intend to teach English in South Korea will be required to undergo criminal record checks，medical and drug tests, provide sealed academic transcripts and have their university diplomas inspected? The Korea Times has reported.The tightened regulations will affect an estimated 17000 foreigners that hold E-2 visas specifically for foreign language teachers. The most controversial requirement is that English teachers residing outside South Korea will have to have an interview at a South Korean embassy before taking up their teaching posts.For applicants living in remote areas in Canada? Australia or the US，this is an additional travel burden、Meanwhile, foreign teachers currently living in South Korea must leave the country after their one-year contracts end and renew their visas at a South Korean embassy in their home country or third country.Before the changes, they could renew their visas by visiting a neighboring country and return without additional documentation. The visa changes are a reaction to public concern about the suitability of some foreign teachers.A report from the South Korean Ministry of Education and Human Resources Development shows between 2001 and August of this year, 1481 foreign language teachers have been caught for a range of offenses including forged degrees, visa violations and general lawbreaking. But the changes are likely to slow up the supply of teachers to South Koreans English language education sector.According to Michael Duffy, manager of a teacher placement service in South Korea， applicants have to spend a few hundred dollars and several months on getting affidavits for documents.“South Korea has put up too many hoops to jump through.” he said，adding that foreigners would seek work elsewhere.Most foreigners wonder if the experience of working in South Korea will be worth the burden of the paper work and increasing restrictions.“I don’t think (South) Korea has thought this through.” said Scott Mclnnis，a Canadian teacher based in Incheon near Seoul、“This is a reactionary move by the government that will have strong implications for the EFL community.” As part of efforts to ease the discontent, the South Korean Ministry of Justice has granted a three-month grace period for current E-2 visa holders to prepare the necessary documents. Which of the following is NOT required of an E-2 visa applicant?A.To pass a Korean language test B.To undergo a medical test. C.To provide sealed school reports D.To undergo a drug test. Before the change of visas regulation，foreign teachers living in South Korean can__________to teach again.A.have an interview again at a South Korean embassy B.return to their own country to renew their visas C.visit a neighboring country if they wanted to renew their visas D.produce additional documentation to renew their visas In paragraph 4, the word “reactionary move” in the sentence means ____________.A.conflicting ideas B.opposing opinions C.subversive activities D.disapproving actions What does EFL refer to?A.English Foreign language learner B.English as a second language C.Learning of English as a foreign language D.English as a foreign language The new visa policy aims at________.A.limiting too many foreigners entering into South Korean to teach English B.improving foreign language teaching in South Korea C.easing the discontent of the South Korean people to the government D.slowing up the supply of English teachers to South Korea 请帮忙给出每个问题的正确答案和分析，谢谢！