题干

地球上最大的生态系统是(  )。

A:湿地生态系统

B:海洋生态系统

C:生物圈

D:陆地生态系统

上一题 下一题 0.0难度 选择题 更新时间:2017-08-01 11:40:42

答案(点此获取答案解析)

C

同类题2

课外阅读。

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       新春佳节之际,妈妈买来了一幅画。我粗粗一看,这幅画并没有什么特别吸引人的地方。我心想:书店里有那么多色彩鲜艳的年画,妈妈为什么要买这幅呢?我一边琢磨,一边细细欣赏起来。

       这是一幅国画,画的背景是巍峨挺拔的高山,被淡淡的烟云笼罩着,使群山若隐若现,令人格外神往。山坡下横插过来一株苍劲的松树,松树下是一对飞奔的骏马。奔在前头的是一匹枣红马,它浑身火红,仰天长嘶,红色的鬃毛高高飘起,全身的肌肉结实得像拳击场上的运动员,一块一块地凸出来,显得十分健美有力。枣红马腾空而起,柔软而漂亮的马尾巴甩得很起劲。紧挨着枣红马旁边是一匹白马,从头到尾一片洁白。连一根杂毛也没有,像一团白云轻轻飘来,显得那么洒脱矫健,分明是一匹千里马。

       我越看越着迷,似乎听到了它们“得得”的马蹄声,看到了他们身后卷起的阵阵尘土,仿佛看见它们自由自在地飞驰在广阔的原野上。

       这时,我猛然想起刚才的疑问,便跑去问妈妈。妈妈神秘地笑了,反问我:“你属什么呀?”我恍然大悟,抢着说:“知道了,知道了,我属马,这年画上的马象征着我。您希望 我努力学习,不怕挫折,永远向前飞奔,对吗?”妈妈满意地点点头。

      啊!马儿,你知道这是妈妈对我殷切的期望,我决心要让它变成现实。

同类题3

阅读理解

Weekend Photography Workshop(研讨班): Seattle Aims

Learn new techniques from a great photographer

Take photos of Pike Place Market, Bainbridge Island, and more

Activity Details

    Seattle is a fantastic place to photograph. Spend the weekend taking photos of the historic Pike Place Market, get a new angle on the Space Needle, and photograph harbor views on Bainbridge Island.

    This workshop is led by a great photographer and a professional instructor and is designed for people who are interested in improving their digital photography. All participants must bring a digital SLR camera(单反相机), a laptop, and the software for organizing and presenting images. The workshop is limited to 25 participants.

Plan – 3 Days

Day 1—Thursday: Seattle

    Settle into our hotel or stay in accommodations of your choice. Gather tonight at a restaurant in town for a welcome dinner.

Day 2—Friday: Pike Place Market & Pioneer Square

    Start the day in the classroom with an instructive talk by our photographer. Our first task this afternoon takes us to the oldest running farmers' market in the country, Pike Place Market. Work on portraits, street scenes, and food photographing. Then photograph the stately 19th century brick buildings of Pioneer Square, Seattle's historic center. End the day with an edit-and-critic meeting.

Day 3—Saturday: Olympic Sculpture Park & Space Needle

    Head out to the Olympic Sculpture Park. Then go to the streets of the downtown area to get a unique view of the Space Needle, and photograph city life against a background of diverse architectural styles. Tonight, we'll present our best images to the group, enjoy dinner at a local restaurant and end our journey.

Cost

With hotel

Without hotel

$2,020

$1,395

    Meals noted in the plan are included in both options(with and without hotel)

Dates

Jul 11 – 14, 2013     Aug 08—11, 2013       Sep 26 – 29, 2013

Contact Information

    For questions about this workshop, please call 1-886-797-4686. Or you can visit the website: http://www. nationalgeographicexpeditions.com.