设计一幅宣传画,要求画面面积为4000cm2,画面的上下各留8cm空白,左右各留

题型:解答题

问题:

设计一幅宣传画,要求画面面积为4000cm2,画面的上下各留8cm空白,左右各留5cm空白,怎样设计画面的高与宽,才能使宣传画所用纸张的面积最小,最小面积是多少?

考点:基本不等式及其应用
题型:解答题

在括号里填上适当的词。

(        )的遐想        建立(        )

(        )的阳光        探索(        )

(        )的月光        访问(        )

(        )的网络        保护(        )

题型:解答题

读短文,做练习。

  春天来了!嫩绿的柳条迎着暖暖的春风,轻轻地摆动。绿茵茵的草坪像给大地铺上了柔软的地毯。花开了,有金黄的迎春花,有粉红的桃花,有雪白的梨花,还有紫色的丁香花。真是一个万紫千红的季节!

1.这篇短文共有(  )句话。请你用序号标出来。

2.短文中有(  )个描写颜色的词语,请你用横线画出来。

3.找一找,填一填。

(  )的春风  (  )的地毯  (  )的桃花  (  )的草坪  (  )的梨花

(  )的柳条  (  )的迎春花 (  )的季节  (  )地摆动  (  )的丁香花

4.请你用“有……有……有……还有……”写一句话。

_____________________________________________________

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影响点火提前角的因素()和(),的变化,还与所用汽油()有关。

题型:解答题

What is distance learning It means that you study on your own, at home or wherever suits you. Recently, the world famous Open University in the United Kingdom has designed a new style of distance learning, which is called (1) . The phrase "Open Learning" means you study (2) . You read course material, work on course activities, and write (3) . The word "Supported" means you have help (4) , the student services staff at regional centres, and centralized areas such as (5) . You can also contact other students through tutorials and (6) , the University’s online conferencing system, and events and clubs organized by (7) . Most distance learning courses use printed paper materials. They also include some (8) materials such as a CD, DVD or video. Many courses have a web site and an (9) . You’ll need access to a computer (10) to make use of these. The Open University can help its students buy a computer and (11) the cost of accessing the Internet.

With most distance learning courses, no (12) are required to study. of course, you have to be aged 18 when your course starts but there is no (13) . Currently the Open University has around (14) undergraduate and more than 30,000 postgraduate students, of which 10,000 have (15) . Nearly all students are studying (16) . About 70 per cent of undergraduate students are in (17) . More than 50,000 students (18) by their employers for their studies. Most distance learning courses (19) . Some of them are even available in other parts of the world. With over 25,000 of its students living outside the UK, the Open University is the (20) that offers distance learning throughout the world.

6()

题型:解答题

使用手提电钻可钻倾斜度为15°的孔。

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