题干

下列动物都具有外骨骼的一组是(    )

A:果蝇和蝗虫

B:蚯蚓和蜈蚣

C:河蚌和瓢虫

D:石鳖和鼠妇

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答案(点此获取答案解析)

A

同类题3

阅读下面的文字,完成小题。

害怕回乡

       ①回乡不是回家。

       ②回家是亲切的。记得母亲在世时,回家是那样温馨,是那样顺理成章。一踏上故土远远望见屋顶上的炊烟,望见炊烟下的竹篱后,有慈母倚门而望。

       ③未进门,早有乡邻,用真诚而纯朴的目光迎候你:“哇,回家来看母亲了。”

       ④匆匆推开柴门,扑进母亲怀里,一卸世路风尘的艰辛。

       ⑤母亲去世后,家就变得缥缈了。但那是我的根,那里有陶冶过我的乡情乡音。在那里,我懂得蒲公英是怎么飞的,蚱蜢是怎么跳的,画眉鸟是怎么唱的,它们都在呼唤我回归。

       ⑥回归是必然的,只是先人已渺,旧居不存,算不了回家,就算回乡吧。但回乡的路是艰难的。

       ⑦当我踏上那弯曲的乡路时,山还是那座山,村还是那个村。乡邻依旧友好,迎候你的目光,也依旧真挚。但话语里有了陌生:“啊,回来看看?”

       ⑧是的,回来看看,看什么呢?流水依旧白,青山依旧青。但自己的目光已不知往哪看,脚步不知往哪儿挪了。

       ⑨“到乡翻似烂柯人”,一颗系念故乡的心,顿时被悬起来了。因为随着母亲的去世,没有了依恋的那扇柴门,也没有了那一缕炊烟。

       ⑩于是无可挽回地坠入了从前,黯然地走进童年的记忆,很悲壮地站到昨日已远、来日无多的路口,踟蹰复踟蹰。在乡邻目光的探询下,不得不对自己的人生之路、回乡之路进行一番审视和梳理了。

       ⑪故乡,是生命的根,在抚摩生命之树的根须时,如果没有结出丰厚的果实来回报,那么你可曾以自己树冠的绿荫,给故乡送来一丝一缕的清凉?你会想到自己没有做官,不是荣归故里,你不很富有,不是衣锦还乡。你也不是明星,不为故乡增色。也许,这并不重要,故乡无意苛求于你。只是你对脚下的这片生你养你的土地,可曾作过应有的付出?

       ⑫想到此,你会明白前人为什么会有“近乡情更怯”的感喟了。

       ⑬你会感喟自己是一只小鸟,在山外的天空里飞了一圈;感喟自己是一条鱼,在人生的江河里漫游了一圈,如今日暮乡关,想到故乡厚实的土地,能歇你坎坷乡愁的奔波,能抚慰你疲惫至极的心灵。于是你回乡,因为你是从这里赤条条地来到世上,也是从这里背起行囊,携着故乡的期待,开始世路风尘的跋涉。而今倦游知还,鸟归林,鱼归渊,回到了生命的源头,你不得不回望一下自己的漫漫长途,也不得不反躬自问:你留在山外世界的行踪足迹是否歪斜?你是否行所当行,止所当止?你坐食的一饭一粥,是否取之有理有节?而对依旧贫瘠的土地,你是否无愧于心,无愧于乡呢?

       ⑭所以回乡,不止是回到往昔,回到记忆,而是回到生活的始发站,去审读自己的生命行程。

       ⑮回家,也许你会生出丝丝愧疚,但会因亲情的抚慰而释然。

       ⑯回乡,面对养育你的土地,你想到故乡的厚恩,未有寸功回报,你会怵然而惊。

       ⑰所以,我害怕回乡。

同类题5

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A Guide to the University

Food

The TWU Cafeteria is open 7am to 8pm.It servessnacks, drinks, ice cream bars and meals.You can paywith cash or your ID cards.You can addmeal money to your ID cards at the Front Desk.Even if you donot buy your food in the cafeteria, you can use the tables to eat your lunch,to have meetings and to study.

If you are on campus in the evening or late at night, you canbuy snacks, fast food, and drinks in the Lower Café located in the bottom levelof the Gouglas Centre.This area isoften used for entertainment such as concerts, games or TV watching.

Relaxation

The Globe, located in the bottom level of McMillan Hall, isavailable for relaxing, studying, cooking, and eating.Monthlyactivities are held here for all international students.Hours are 10am to 10 pm, closed on Sundays.

Health

Located on the top floor of Douglas Hall, the Wellness Centre iscommitted to physical, emotional and social health.A doctor andnurse is available if you have health questions or need immediate medical helpor personal advice.The cost ofthis is included in your medical insurance.Hours areMonday to Friday, 9am to noon and 1;00 to 4;30pm.

Academic Support

All students have access to the Writing Centre on the upperfloor of Douglas Hall.Here,qualified volunteers will work with you on written work, grammar, vocabulary,and other academic skills.You can signup for an appointment on the sign-up sheet outside the door two 30–minuteappointments per week maximum.This serviceis free.

Transportation

The TWU Express is a shuttle(班车) service.The shuttletransports students between campus and the shopping center, leaving from theMattson Centre.Operationhours are between 8am and 3pm.Saturdays only.Round tripfare is $1.