2017英语等级考试pets5级阅读理解每日练习八

　　1. The case of Ashanthi Desilva is mentioned in the text to _______。

　　[ A ] show the promise of gene-therapy

　　[ B ] give an example of modem treatment for fatal diseases

　　[ C ] introduce the achievement of Anderson and his team

　　[ D ] explain how gene-based treatment works

　　2. Anderson’s early success has_______。

　　[ A ] greatly speeded the development of medicine

　　[ B ] brought no immediate progress in the research of gene-therapy

　　[ C ] promised a cure to every disease

　　[ D ] made him a national hero

　　3. Which of the following is true according to the text?

　　[ A ] Ashanthi needs to receive gene-therapy treatment constantly.

　　[ B ] Despite the huge funding, gene researches have shown few promises.

　　[ C ] Therapeutic genes are carried by harmless viruses.

　　[ D ] Gene-doping is encouraged by world agencies to help athletes get better scores.

　　4. The word “tarnish” (line 4, paragraph 4) most probably means _______。

　　[ A ] affect

　　[ B ] warn

　　[ C ] trouble

　　[ D ] stain

　　5. From the text we can see that the author seems _______。

　　[ A ] optimistic

　　[ B ] pessimistic

　　[ C ] troubled

　　[ D ] uncertain