Questions 26 to 35 are based on the following passage. Tiny pieces of gold could be used in the fight against cancer, new research has suggested. Scientists at Edinburgh University have just completed a study which shows the 26 metal increased the effectiveness of drugs used to treat lung cancer cells. Minute fragments, known as gold nanoparticles(纳米粒子), were 27 in a chemical device by the research team. While this has not yet been tested on humans, it is hoped such a device could one day be used to reduce side effects of current chemotherapy treatments by 28 targeting diseased cells without damaging healthy tissue. Gold is a safe chemical element and has the ability to 29 chemical reactions. Researchers at the University of Edinburgh discovered properties of the metal that allow these catalytic abilities to be accessed in living things without any side effects. The device was shown to be effective after being 30 in the brain of a zebrafish, suggesting it can be used in living animals. The study was carried out in 31 with researchers at the University of Zaragoza’s Institute of Nanoscience of Edinburgh’s CRUK Edinburgh Centre, said: “We have discovered new 32 of gold that were previously unknown and our findings suggest that the metal could be used to 33 drugs inside tumours very safely. There is still work to do before we can use this on 34 , but this study is a step forward. We hope that a similar device in humans could one day be implanted by surgeons to activate chemotherapy directly in tumours and reduce harmful effects to healthy organs.” The next steps will be to see if this method is 35 to use in people, what its long-and short-term side effects are, and if it’s a better way to treat some cancers. A)accelerate B)cautiously C)collaboration D)elaboration E)encased F)implanted G)patients H)precious I)precisely J) previous K)properties L)release M)relieve N)safe O)unsafe