is infected, and then bites another person, but somehow Wolbachia blocks that — and local spread has nearly disappeared in those North Queensland communities, Simmons said.
The studies are continuing in other countries. But the findings, presented at a meeting of the American Society for Tropical Medicine and Hygiene, suggest it's possible to turn at least some mosquitoes from a public health threat into annoying biters.
The work marks \said Michigan State University professor Zhiyong Xi, who wasn’t involved with the project but has long studied how Wolbachia can turn mosquitoes against themselves.
More research is needed, specialists cautioned. \results are pretty exciting—strong levels of reductions — but there clearly are going to be things to be learned from the areas where the reductions are not as great,\said Penn State University professor Elizabeth McGraw.
32. What can we learn about the lab-grown mosquitoes? A. They lose the ability to bite people. B. They become harmful to human beings. C. They carry dangerous Wolbachia bacteria. D. They spread Wolbachia bacteria by mating.
33. What does the underlined word \A. The bite from a mosquito. C. The spread of Dengue.
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B. The local community. D. The infected person.
34. What do the last two paragraphs suggest? A. This research proves a complete success. B. Scientists agree on this research.
C. There is still room for improvement.
D. Mosquitoes turn themselves against harmless ones. 35. What is the best title for the text?
A. Bacteria-infected Mosquitoes Bite Deadly Dengue B. Transform Mosquitoes into Annoying Biters C. Fight against Mosquitoes with Wolbachia D. Harmless Mosquitoes Are on Their Way 第二节（共5小题；每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Being scared is not always a treat. When a balloon pops, we may jump. 36 . How does the body triggered (激发) these reactions? When we encounter something we’re not familiar, our brain and body start making changes to help prepare us for the unknown. These changes are part of the body’s “threat,” “stress,” or “fight-or-flight” response. This response is triggered by the five senses, which are always sending information to the brain. 37 , the brain sounds a danger alarm. It releases chemicals into the bloodstream, and those chemicals act on different parts of the body. Once the body is alert（警觉的）, the brain decides whether or not the danger is real.
38 . It urges a person to hide, run away, or defend oneself. Faster
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heartbeat and breathing send more blood and oxygen to the muscles so they’re ready when they’re needed. Stress chemicals can make a person more alert. Our memories also help protect us. We keep a close eye on babies because they don’t understand what might hurt them. As babies grow, they learn what’s unsafe, and their brains store those memories. 39 .
Experiences can lead to long-lasting fears that may stop a person from trying new things. We’re born with the ability to feel fear, but a lot of what we’re afraid of is learned. A long-lasting fear can mean you’ve had a bad experience, and your brain doesn’t want you to have it again. Many people have beaten their own fears. Here’s one method. 40 , they learn the facts about anything that seems scary. Knowledge can help a person feel less afraid.
A. Instead of listening to their imagination B. When they signal something unexpected C. Our heart beats harder, and we breathe faster D. Then their brains use fear to warn them of dangers E. It’s good to have a healthy sense of what’s dangerous F. Fear is a tool that the brain uses to keep the body safe G. Memories are an important factor in fear-lasting experiences 第三部分 英语知识运用（共两节，满分45分） 第一节
完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可
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以填入空白处的最佳选项，并在答题卡上将该项涂黑。
Ethan Katz enjoys playing with his dogs, McFly and Brooklyn, and often helps his grandma feed and 41 her five dogs. For his ninth birthday, Ethan 42 the idea to sell T-shirts for his favorite 43 , City Dogs Rescue in Washington, D.C.
The dogs of Ethan’s and his grandma’s were 44 from animal shelters. Most shelters have 45 on the number of animals they can care for. City Dogs Rescue 46 dogs from over-crowded shelters. Volunteers, called fosters, care for the animals 47 they’re adopted.
Ethan went on a website for T-shirt designing and fund-raising. He typed a(n) 48 about his project, designed a T-shirt, and 49 each shirt at $20. Every time someone bought one, part of that 50 went to City Dogs Rescue.
As word spread, many people bought shirts. “My 51 goal was to sell 75 shirts, and I went 52 that in three days,” said Ethan. By the end of his 30-day fund-raising 53 , he had sold 179 shirts and raised $2,640. That money helped City Dogs Rescue save 10 dogs from overcrowded shelters.
But Ethan wasn’t finished. People continued to 54 City Dogs Rescue about buying shirts. So Ethan decided to 55 the fund-raising event for another month. Through T-shirt sales and other 56 , he finally raised more than $14,500 in all. Dogs in D.C. are 57 to have him as their friend!
Kids often feel as if they had no say in things, and Ethan 58 them that they could have a real 59 . His love for his own dogs 60 Ethan Katz to help
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others. 41. A. observe 42. A. shared
B. sell
C. walk
D. save
D. came up with
B. changed C.went on with
43. A. dog
B. charity
44. A. adopted B. abandoned 45. A. decrease B. attention 46. A. refuses B. replaces 47. A. until
B. after
48. A. email
B. phrase
49. A. paid
B. priced
50. A. time B. cost 51. A. special
B. original
52. A. for
B. into 53. A. show
B. drive
54. A. contact B. visit 55. A. cover
B. start 56. A. donations B. rescues 57. A. friendly
B. popular 58. A. guaranteed B. expected
C. shelter
C. protected
C. changes
C. removes C. because
C. picture C. bought
C. love
C. unique C. above
C. meeting
C. promise C. direct C. decisions C. lucky
C. showed
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D. event
D. kept
D. limits
D. returns
D. although
D. paragraph
D. donated D. money
D. final
D. after
D. organization
D. advise
D. run
D. discussions D. lovely D. judged
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