【正文】 had an idea — 51 as Disney princesses and visiting pediatric cancer 52 . When kids are in a 53 for so long, they don’t get all the magic that most kids do, says McGrane. It39。s surprise birthday party, and her favorite Disney 41 , Elsa from Frozen, had arrived. The two 42 began to sing the movie39。 Elsa, it39。ll feel better when you re ready for them if they do. When you travel abroad, you are in a place you don’t know well and you can always be a target, especially your valuables. Don’t keep large amounts of cash in your wallet. 38 Also, take copies of your travel documents with you and leave your passport and other important documents in the hotel. 3. Nothing ruins a trip faster than the unexpected crisis. 39 It will insure yourself against unexpected accidents, so it is necessary to buy the insurance. But you need to be careful about the items in the contract(合同 ), so that you know what you are and are not covered for when you book travel insurance. 4. While enjoying the moment in the bar, be cautious and keep an eye on your drink at all times. Besides, being on holidays doesn’t mean you have the right to do what you want. 40 . Keep these tips in mind and make the most of your time. Have fun with family and friends and explore and enjoy your time away. A. Take more in any case. B. Expect the unexpected. C. Don39。s and Don39。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。s the purpose for this experiment? A. To make local birds happy. B. To see what color birds like most. C. To see if color of foods affects birds. D. To find how local birds feed themselves. 33. What is the most important about the birdfeeders? A. They are filled with some water. B. They are placed in secret places. C. They are painted in different colors. D. They are all the same size and type. 34. What39。s not bad if your hypothesis was wrong. The main thing is that you39。s pretty hard to tell them apart from a human review Their study, which will be pressed at the ACM Conference on Computer and Communication Security in October, aimed to stress how easily these systems can write reviews like humans and how damaging they can bee if they re not mentioned properly. Since many small businesses rely on online reviews to help grow and support their reputation, a future where someonelike a petitor or angry customercould crazily fill their page with bad reviews written by a machine is pretty worrying. And, according to the research team, the threat (威脅 ) goes far beyond a bunch of fake reviews on Yelp. In general, the threat is bigger, Ben Y. Zhao, one of the authors of the study, said. “ I think the threat towards society is large and it really misleads users and shakes our belief in what is real and what is not. I think that’ s going to be even more unimaginable.” To test how believable these reviews came across, the researchers invited 40 volunteers and had AI generate(生成 ) five fake reviews for 40 actual restaurants. The volunteers were asked how useful they thought the reviews were and whether or not they thought they were fake. The Al reviews ranked as effectively indistinguishable from real reviews, according to the study. Further the fake reviews were given a 3. 15 usefulness rating, pared to a 3. 28 rating for human reviews. 28. Why do researchers use Al system to write fake reviews on Yelp? A. To press their study at the ACM Conference. B. To replace humans reviews with AI reviews. C. To make sure that they are not harmful to our life. D. To make a research on AI systems review writing. 29. According to the text, what do we know about the AI reviews? A. They can be found everywhere. B. They are hardly helpful to our life. C. They can be vital to small businesses. D. They bring us a lot of convenience. 30. What does the last paragraph tell us? A. AI reviews were effectively distinguishable. B. AI system was really a help in review writing. C. Restaurants should care for customers39。t satisfied with himself. B. Because he was a person of selfdiscipline. C. Because he disliked those successful people. D. Because he wanted to share his idea on success. 25. What made the writer invite the older gentleman to join him? A. His great kindness. B. The gentleman’ s fame. C. His eagerness for success. D. The gentleman’ s good manners. 26. What are the four large books probably about? A. Personal changes. B. Sayings of wisdom. C. The gentleman39。 ▲ Expand Your Horizons The Manitoba Museum is on