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摘要： Award-winning young scientist becomes voice of science on social media.ZHOU Siyi cuts a striking figure.Or to be precise,her avatar on Douyin does.On the videocentric social networking platform,known as TikTok outside China,the 29-year-old Zhou,is a physics wiz in black glasses and a fluorescent orange tee,surrounded by a cloud of words related to cosmology,the string theory,field theory,and other cutting-edge branches of modern physics.“These are the keywords of my research area,”said Zhou,describing her recent foray into Douyin.For about four months,she has been posting videos on the app to explain science to laypeople.She breaks down long and mysterious scientific terms into straightforward everyday language so that everyone can get a little glimpse into the deepest enigmas of the universe.

摘要： Hello,everyone!My name is Zhou Ling.And my English name is Jenny.I’m seven.I’m going to primary school!I have a new schoolbag.Look!This is my new schoolbag.It is colourful and nice.It is yellow,red,blue,orange and purple.In my schoolbag,there is a pencil,a pen,a ballpoint pen,a crayon,a ruler,a book and an apple.The pencil is purple.The ruler and the crayon are blue.My book is green.Can you see the apple?What colour is the apple?Is it green?No,it isn’t.Look!Wow,it’s red.

摘要： A"car graveyard"in Bangkok for its brightly coloured cabs has been turned into a vegetable garden with frog ponds,set up to help feed out-of-work drivers.In an open-air parking lot in the west of the Thailand’s capital,green shoots fed by rain start to grow from the roofs of the city’s pink and orange taxis.

摘要： cqvip:A"car graveyard"in Bangkok for its brightly coloured cabs has been turned into a vegetable garden with frog ponds,set up to help feed out-of-work drivers.In an open-air parking lot in the west of the Thailand’s capital,green shoots fed by rain start to grow from the roofs of the city’s pink and orange taxis.

摘要： PartⅠ阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。1 A recent experiment suggests that the answer to that question may depend on your age.Martin Doherty and some researchers led an experiment,using pictures of some orange circles.

摘要： 作为北美大陆最古老的山脉中的一支,大烟山不仅四季分明,而且24小时都有不同的美景:清晨的朦胧、午间的碧空和夜晚的萤火虫。“On top of old Smoky,all covered with snow.”That is the first line of an American folk song associated with the Great Smoky Mountains.The breathtaking mountain range runs along the border of Tennessee and North Carolina.Established as a National Park in 1934,the Smokies draws large crowds in early fall,when the foliage turns spectacular shades of orange,yellow,and red;and in the spring,when colorful wildflowers bloom.

摘要： Musella lasiocarpa(Fr.)C.Y.Wu ex H.W.Li,also known as“Thousand Petal Lotus”“Thousand leaf Lotus”,is a large perennial herb of Musa.Pseudostem formed by overlapping leaf sheaths in imbricate arrangement is 30-80 cm in height.Leaves are ovoid to oblong,50-110 cm in length and 30-50 cm in width.Rosette inflorescence grows erectly on pseudostem with flowering time from March to October.Bracts are yellow to orange-red,petal-like,layers from bottom to top,30-50 cm in diameter,bracts oval-shaped to oblong,13-20 cm in length,7-13 cm in width.Flowers grow at the base of the bracts,arranged in 1-2 rows with 2-4 flowers per row.Berry is triangulate ovate,3-5 cm long and about 3 cm in diameter.Each fruit contains 30-80 seeds with 6-7 mm wide,dark brown or brown,smooth,with a large white hilum on the ventral surface.Musella lasiocarpa is endemic to China,and its wild populations are rare.It mainly distributes in cliff habitats ranging from 1600 to 2200 m in Yunnan and Sichuan.Plants and flowers have high ornamental value,and as one of the“Five Trees and Six Flowers”in Buddhism has been endowed with profound cultural connotation.Pseudostem is rich in starch and can be eaten and used as fodder.Flowers are nectar rich.Flowers and Leaves can be used as medicine which has the effect of astringent hemostasis,treating leucorrhea,red collapse and bleeding under the large intestine;The stem juice is used to alleviate the alcohol intoxication and to avoid kusnezoff monkshood poisoning.

摘要： Musella lasiocarpa(Fr.)C.Y.Wu ex H.W.Li,also known as“Thousand Petal Lotus”“Thousand leaf Lotus”,is a large perennial herb of Musaceae.Pseudostem formed by overlapping leaf sheaths in imbricate arrangement is 30-80 cm in height.Leaves are ovoid to oblong,50-110 cm in length and 30-50 cm in width.Rosette inflorescence grows erectly on pseudostem with flowering time from March to October.Bracts are yellow to orange-red,petal-like,layers from bottom to top,30-50 cm in diameter,bracts oval-shaped to oblong,13-20 cm in length,7-13 cm in width.

摘要： Rootstocks have a significant influence on adaptation to biotic and abiotic stress conditions and quality of fruit.So,choice of rootstock for a specific growing region is an important decision for a grower to make when establishing a commercial citrus orchard.This study was undertaken to assess effects of rootstock and location on quality of orange fruit.The study was conducted over two consecutive years(2017/18 and 2018/19).Scions from the Gunda Gundo orange grove were grafted on rough lemon and sour orange rootstocks and planted in Tigray and Afar,Ethiopia at four sites(Abala,Agulae,Adiha and Rama).The experiment was laid out in Randomized Complete Block Design(RCBD)with four replications.Data on different physico-chemical and bioactive compounds were collected and analyzed using R software(version 4).Compared to sour orange,rough lemon rootstock revealed higher fruit mass(151.96 g,195.38 g),fruit length(62.27 mm,68.88 mm)and fruit diameter(65.58 mm,71.3 mm),in 2017/18,2018/19,respectively.Among the four locations(Abala,Agulae,Adiha and Rama),higher juice percentage was found in Adiha(43.47%in 2017/18)and Abala(49.87%,in 2018/19).In 2017/18 higher total soluble solid(TSS,13.87%),TSS/acid ratio(19.18)and fruit rag(32.77%),were obtained at the Rama site.On the one hand,higher vitamin C(826.6 mg·kg^(-1))and total phenolic content(208 mg·kg^(-1 )GAE)were recorded at Agulae than Abala,Adiha and Rama sites from sour orange rootstock.High TSS,TSS/acid ratio and antioxidant were recorded from orange fruits at Rama site.This was expected to have resulted from hot climate conditions at the site.Besides,at a relatively cooler condition of the Agulae site,high phenolic,reduced ferric power and high vitamin C were recorded.Rough lemon rootstock improved fruit size,while rootstock did not affect the contents of TSS,TSS/acid ratio across the sites in both harvesting years.

摘要： China and Africa to deepen cooperation on digital industry innovation Coffee, wine, oranges and tea-these and other products from African countries will soon be available on China’s e-commerce platforms with the launch of a three-month online promotion season. The campaign is part of China’s broader cooperation with Africa in digital innovation.