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问题 单项选择题 A3/A4型题

某县人口50万，约80%居民以河水为饮用水，该县设有一传染病科的综合医院，其污水未经处理直接排入河水中。该县1986年1~11月份伤寒发病人数达1063例，超过该县历史（1958~1985年）同期发病人数的6.9倍。初步调查，发现患者集中于河水排污口的下游地带。这一地区居民饮用河水者的伤寒发病率为6.5%，而饮用地下水者的伤寒发病率为0.62%。

确定居民伤寒流行与饮用水无关的是（）

A.城市污水排出口检出伤寒杆菌

B.绝大多数伤寒患者有饮用同一水源的历史

C.城市污水排出口下游检出伤寒杆菌

D.医院污水排出口检出伤寒杆菌

E.伤寒患者排泄物中检出伤寒杆菌

答案

参考答案：E

单项选择题

大风浪中偏浪航行，其方法是船首线与波浪方向成（）。

A、10°-20°的交角

B、20°-30°的交角

C、30°以上的交角

D、以上均可
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单项选择题

第2篇 Tightened Visa Regulations


According to South Korea’s 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 17,000 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, 1,481 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 Korea’s English language education sector. According to Michael Dully, 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 McInnis, a Canadian teacher based in Incheon near Seoul. "This is a reactionary move by the government that will have p 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.
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