单选题 Violent criminals with something to hide have more reason than ever to be paranoid about a tap on the shoulder which could send them to jail. Queensland police are working through a backlog of unsolved murders with some dramatic success. Greater cooperation between the public and various law enforcement agencies is playing a role, but new genetic-testing techniques are the real key to providing the vital evidence to mount a prosecution.
Evidence left behind at the scene of any murder is guaranteed to outlive the person who left it. A blood, saliva or tissue sample in the size of a pin, kept dry and out of sunlight, will last several thousand years. From it, scientific analysis now can tell accurately the sex of the person who left it.
When matched against a sample from a crime suspect, it can indicate with million-to-one certainty whether the samples come from the same source. Only twins share identical DNA. So precise is the technology if the biological parents of a suspect agree to provide a sample, forensic scientists can work out the rest for themselves without cooperation from the suspect.
Queensland forensic scientists have been using the DNA testing technology since 1992, and last year they were recognized internationally for their competence in positive individual identification. That is part of the reason 20 of Queensland's most puzzling unsolved murders dating to 1932 are being ac timely investigated. There also have been several recent arrests for unsolved murders.
Forensic evidence was instrumental in charges being laid over the bashing death of waitress Tasha Douty on Brampton Island in 1983. Douty's blood-splattered, naked body was found on a nude sunbathing beach at Dinghy Bay on the island. Footprints in the sand indicated that the killer had grappled with the 21-year-old mother who had fled up the beach before being caught and beaten to death.
According to Leo Freney, the supervising forensic scientist at the John Tonge Centre at Brisbane's Griffith University, DNA testing has become an invaluable tool for police, its use is in identifying and rejecting suspects. In fact, he says, it eliminates more people than it convicts.
" It is easily as good as fingerprints for the purpose of identification, " he says. "In the case of violent crime it is better than fingerprints. You can't innocently explain things like blood and semen at a crime scene where you may be able to innocently explain fingerprints. " In Queensland, a person who has been arrested on suspicion of an offence can be taken before a magistrate and ordered to provide a sample of body fluid by :force if necessary.

单选题 What is implied in the first sentence of Paragraph 1 ?

【正确答案】 B

【答案解析】[解析] 本题考查推理引申。文章首句提到，有事情要隐瞒的暴力罪犯现在更有理由害怕别人拍一下他们的肩膀，因为这能将他们送进监狱。从字面上看，这句话是在说明罪犯做贼心虚的样子。接着该段下文开始论述昆士兰的警察侦破悬案所取得的成就，其主要原因是新的基因检测技术。由此可推知，该句“拍一下肩膀就能将罪犯送入监狱”是侦破技术的发展带来的结果，整个句子的含义是“高科技使罪犯更无法逃脱法律的制裁”。因此B选项符合该句的隐含含义。故正确选项为B。

单选题 In Queensland, dramatic progress made in investigating unresolved murders is because of______.

【正确答案】 C

【答案解析】[解析] 本题考查事实细节。第一段结尾处提到，公众和各家执法机构的合作(对昆士兰警方侦破案件的成功)起了一定作用，但对于提供足以起诉的重要证据，新的基因检测技术是关键。由此，可知原文是“公众”，而非“嫌疑犯”；是“提供上诉证据的新技术”，而非“上诉程序”，所以排除A和B两个选项。第四段首句提到，昆士兰的法医们一直使用DNA测试技术，并因正确的身份识别能力而得到国际认可。这部分解释了许多悬案正在被积极地调查的原因，所以C选项符合题意。D选项文中未曾提及。故正确选项为C。

单选题 Evidence left behind at the scene of a crime is all of the following EXCEPT______.

单选题 What can be inferred from the text?

【正确答案】 C

【答案解析】[解析] 本题考查推理引申。第二段第二句提到，如果让证据保持干爽，避免阳光照射，它将持续保存几千年，所以A选项错在warm。第三段第二句提到，双胞胎的DNA会完全一样，因此B选项错在uniqueness。第四段提到，昆士兰警方利用綦因检测技术在侦破案件上取得很大进展，接着第五段举例说明。第五段首句提到，法医的证据对于女招待塔莎·道迪案件的起诉起了关键作用。因此C选项是符合要求的推理。由最后一段可知，在刑事案件中，基因检测比指纹更加有效，因为在犯罪现场留下血液和精液时，很难解释自己是无罪的，由此可知D选项不正确。故正确选项为C。

单选题 By the use of new technology, forensic scientists can______.

【正确答案】 B

【答案解析】[解析] 本题考查事实细节。文章第三段结尾处指出，基因检测技术准确性如此之高，如果嫌疑人的亲生父母同意提供样本，即使没有嫌疑人的合作，法医电能够知道DNA的剩余部分。可见并非完全独立完成，A选项错误。第六段指出DNA技术可以用米确认嫌疑人，同样也可以排除被怀疑者，而且后者要多于前者。所以B选项正确。第二段末句提到科学分析可以精确到辨别出罪犯的性别，而C选项偷换概念成“外貌“ 由全文最后一句话可知，嫌疑犯被带到地方法官那里，被强制要求提供体液，因此D选项不是法医的合法行为、故正确选项为B。