Do we really spend that much time on electronic devices 备)，though?38 According to a recent study,today's young Americans (aged 8-18)spend more than seven-and-a-half hours every day on electronic devices,such as smartphones,televi- sions,computers,and video games. So what's the big deal?Many experts have noted that a reli- ance upon electronic communications can have a negative effect on social skills and writing skills.39 While digital communi cations teach certain skills and habits,face-to-face conversations teach other skills that are important for our overall well-being. 40 Experts urge people to stay away from screens more often.Set aside time without electronics to share face-to-face conversations with friends and family.Keeping a healthy balance

C.What makes a shark right-handed is quite clear. D.The research on shark behavior needs to be done more. 35.What can be the best title for the text? A.Global warming endangers sea animals B.Sharks survive warming ocean temperatures C.Climate change is making sharks right-handed D.How sharks get their food reward

the surrounding temperature of the bay 20.6'C and 12 others in a tank that was gradually warmed to23.6℃to simulate(模仿) those predicted end-of-century ocean temperatures. Five sharks hatched in the raised temperatures died within a month of hatching.To test whether the remaining sharks had de- veloped lateralization,the team placed the animals in a long tank with a Y-shaped part at one end.Behind the part was a food re- ward;sharks just had to decide whether to swim to the right or left side of the Y to reach their snack. The authors found that sharks hatched in the raised temper atures showed a strong preference for turning right.The sharks in the control group showed no preference one way or the other. Understanding the effect of warming oceans on shark behav-

第二节（共15小题；每小题1.5分，满分22.5分） 听下面5段对话或独白。每段对话或独白后有几个小题，从题 中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位 置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒 钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读 两遍。 听第6段材料，回答第6、7题。 6.How much did the speakers pay? A.￡25. B.C33. C.￡50. 7.What did the man think of the food? A.It was expensive.

at the front from getting too tired.This grouping together doesn't just happen during migration.They can also go together in groups when taking a rest or finding good food. The common crane is an omnivore and can feed on land or water mostly thanks to its special beak ()They mainly eat plants,such as roots,fruits or seeds,and small animals,such as worms,insects,or spiders.The latter form part of their diet. The common crane is a large migratory bird that spends its life traveling between Eurasia and Africa.It's particularly found in Greece,Germany,Vietnam,Thailand,and Sudan.It is known as a great traveler.In a single year,they can fly thou- sands of miles.They prefer snow forests,or the colder areas.They look for quiet environments and avoid meeting with people,although it's possible to see them in crop fields.

paign. C.There are only 45 "No Butts About It"throughout Amer ica. D.The author likes to be on newspapers and win prizes. 27.Which is the best tittle for the text? A.Two sisters'life story B.Buy yourself an ashtray C.Save our town from cigarette butts D.Cigarette butts do harm to people's health

B My twin sister Alice and I have been trying to get people to stop dropping cigarette butts (for seven years.One day, we were walking in our hometown and saw hundreds of cigarette butts on the ground.They made the town look so ugly that we decided to start a group to make people stop dropping butts.We called it“No Butts About It”. At first,we drew pictures with "The Earth is not your ash- tray(烟灰缸)”written on them.We put the pictures around our hometown-in parks,by beaches,and along roads.We wanted to make people understand that dropping butts hurts the environ- ment.Most smokers don't think that dropping butts hurts the Earth.But it does,and all rubbish does! Later,we wrote to companies and asked them for money to

37.阅读图文材料，完成下列要求。(22分) 在海南岛西部有一片罕见的现代沙漠，发育在原始沙垄 上，沿海岸线及河流狭长分布。该沙地能在短时间内退化或恢 复，演变速度快。该地西部夏季盛行西南风，降水丰富，冬季盛 行东北风，降水稀少。海南岛西部冬季洋流受季风影响大。下 图示意海南岛西部沙漠位置，下表示意其面积变化。 20°N ▲186 南 ~50一等高线/m 海 避沙漠 之河流 110°E

第Ⅱ卷 (非选择题 共56分) 二、非选择题（共56分。第3637题为必考题，每个试题考生都必 须作答。第43~44题为选考题，考生根据要求作答) (一)必考题：共46分。 36.阅读图文材料，完成下列要求。(24分) 免耕指在作物播种前减少翻动表土、保留部分秸秆残茬的 耕作方式。巴西马托格罗索州是世界主要的转基因大豆产区 之一，该州普遍采用免耕技术种植大豆。我国从马托格罗索州 进口的大豆主要用作饲料原料，而我国东北地区生产的优质大 豆主要用作食品原料。目前，巴西、美国、阿根廷是我国三大主 要大豆进口来源国，进口量占进口大豆总量的95%左右。近年 来中美两国间爆发贸易战，巴西向我国出口大豆量变化大。下 图示意马托格罗索州位置。

答案A 解题分析 太阳位于①处时，地方时约为14：00，为一天中气 温最高的时间点。