下列资源中属于非可再生资源的是 [ ] A.耕地   B.水能  C.石油

题型:选择题

问题:

下列资源中属于非可再生资源的是 [ ]

A.耕地  

B.水能 

C.石油  

D.森林

考点:自然资源概况
题型:选择题

如图,有一块边长为4的正方形塑料模板ABCD, 将一块足够大的直角三角形的直角顶点落在点A, 两条直角边分别与CD交于点F, 与CB的延长线交于点E, 则四边形AECF的面积是 (      )

题型:选择题

关于双耳效应,下列说法正确的是    [     ]

A. 利用双耳效应,可以判断声音的大小 

B. 利用双耳效应,可以判断声音的远近 

C. 利用双耳效应,可以准确判定声音传来的方向 

D. 声音从人的正前方或正后方传来时,人耳不易分辨清楚

题型:选择题
在△ABC中,A、B、C成等差,且a,b,c也成等差,又ac=6,则b的值是(  )
A.
2
B.
3
C.
5
D.
6
题型:选择题

下图是某地区的地形图,回答14—16题

小题1:与长江三角洲、珠江三角洲等地区相比,图示平原地区成为商品粮基地的优势条件是

A.交通发达

B.单位面积产量高

C.水热条件好

D.人均耕地面积广小题2:以下不属于该商品粮基地特点的是

A.以国营农场的经营方式为主

B.粮食商品率处于较低水平

C.已经形成粮食作物的地区专业化生产

D.是我国农业机械化水平最高的地区之一小题3:关于图中A、B两省的农业发展,叙述正确的是

①荒地、沼泽面积广大,应大规模开垦为耕地  ②适宜建设商品粮和乳肉等农产品基地

③制约农业发展的主要原因是干旱缺水和低温冷害

④退耕还林、还草、还湿是当地环境保护的重要措施

A.①③       B.②④       C.①④       D.③④       

题型:选择题

Have you ever been to a wedding and simply loved the bride’s bouquet(花束)?More than likely some part of it was the Hawaiian Wedding Plant. This foreign houseplant can be enjoyed by anyone, not just brides. With a little proper attention and careful planning on location, this foreign houseplant, which is from Madagascar, can be brought into the home where it can become an interesting focus.

Caring for the Hawaiian Wedding Plant is not much different from caring for any other houseplants that may already be in your home. The only difference between this type of houseplant and others is the amount of the basic requirements that this foreign houseplant needs to survive and perform beautifully. During the growing season, this plant requires its wet soil, but when winter rolls around, this plant needs its soil to be kept drier.

Hawaiian Wedding Plants should also be potted in well-drained(排水)soil and placed in a location that receives full sun. That the soil must be kept wet does not mean that it should sit in water, so the soil must drain easily or this plant will not survive. Water the plant daily and feed this plant every two to three weeks with a little fertilizer(化肥) for acid-loving plants. Prune in early spring, even as early as February. If these needs are met, this plant will stay beautiful.

The most special feature of this foreign houseplant is its long lasting blooms(开花)combined with its unbelievable sweet smell. The Hawaiian Wedding Plant blooms the heaviest in the spring months, but has been known to bloom in any warm months, so do not be surprised to find blooms most time of the year except maybe in the dead of winter.

小题1:Why does the author mention wedding and bouquet in the first paragraph?

A.To introduce a Hawaiian wedding.

B.To attract the readers’ interest in the passage.

C.To show the beauty of the flower.

D.To teach the readers to choose proper bouquets.小题2:The Hawaiian Wedding Plant comes from________.

A.Hawaii

B.China

C.Madagascar

D.Alaska小题3:Which of the following are the growing conditions of Hawaiian Wedding Plant?

a. Wet soil.                b. Lots of fertilizer.                     c. Proper sunshine.        d. Some acid.

A.a.c

B.a. b

C.b. c

D.a. d小题4:What does the underlined phrase “in the dead of winter” in the last paragraph probably mean?

A.At the end of the winter.

B.At the beginning of the winter.

C.In deadly condition in winter.

D.In the coldest part of winter.

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