第40期总第793期高一IV版答案与解析
D1 1-4 CADD
D2 1. helmets 2. recognition 3. five 4. medical 5. hands-free
6. open 7. germs 8. remote 9. fevers 10. disinfect
D3 1-3 CAD
D4 1-3 ADB
D5 1. if/whether 2. them 3. showing 4. gently 5. disappointed
6. for 7. the 8. to continue 9. Who 10. had heard
解析：
D1 1-4 CADD
1. C。根据文章第一段可知，Girl Scouts每年此时都会卖出大量的饼干来为她们的公益项目筹集资金；再根据下文“... amid the outbreak of COVID-19, millions of dollars worth of cookies are going unsold”可知，今年由于疫情，她们有很多饼干没能卖出去，故选C。
2. A。根据文中“They are donating unsold cookies to medical professionals and first responders”可知，Plantation Troop 10442的成员在商量之后，决定将饼干捐给抗疫一线的人们，故选A。
3. D。根据文中“she recognizes that having to stay home has its benefits”以及“We've been able to spend a lot more time with each other online”可知，虽然她想念面对面的交流，但是她发现待在家里也有自身的好处，即有更多的时间和朋友们在线交流，故选D。
4. D。根据文章最后一段“Their think-outside-the-(cookie)-box donation is taking the leadership skills they have learned throughout their many years of Girl Scouts and putting them into action to make a difference during this difficult time.”可知，Johnson认为她们捐赠饼干的事迹展现了她们的领导才能，用实际行动在这个艰难的时刻做出了自己的贡献，故选D。
D3 1-3 CAD
1. C。前两段列举了不同国家在不同年份测量珠穆朗玛峰，得出了不同的数据，也由此解释了接下来的第三段提出的一个观点——“A 30-member Chinese survey team set to reach the peak of ... to settle the dispute”，即对于珠穆朗玛峰的海拔，各国没有达成共识，故选C。
2. A。根据文中“... despite advanced technologies we now have ... there is no guarantee that they can operate smoothly under extreme conditions, which is why sending human experts to the peak is still necessary to ensure a precise reading”可知，中国的科学家测量珠峰最大的困难是环境、气候等恶劣条件，故选A。
3. D。根据文中“Changes to the peak’s height can indicate whether the two plates are heading toward or away from each other ...” ，以及“The survey team will also get firsthand information about the condition of the snow and other natural materials at the top which could be an indicator of climate change on the Tibet-Qinghai Plateau”可知，通过测量珠峰的高度，科学家们可以获得关于地壳运动的有关信息，也可以了解青藏高原的气候变化问题，故选D。
D4 1-3 ADB
1. A。从文章第二段“A former policeman said his mother took him to the opera in St. Louis on Saturdays. He listened to dialects he didn't understand. He grew to love opera”可知，这位警员的母亲每周六便会带着他去听歌剧，他虽然听不懂但是慢慢地喜欢上了听歌剧，所以答案为A。
2. D。从文中倒数第二段可知，这个年轻人已经把室友的母亲当成了自己母亲的替身，并维系着他珍爱一生的亲情纽带，所以不难看出他对室友的母亲充满感激之情，故答案为D。
3. B。在文章最后一段最后一句“But if your mother is still living, it might also be good to tell her”作者提出了自己的建议，如果母亲还在世，应该向母亲倾诉对她的爱，所以答案为B。
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