增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

    I'm proud to tell you the news you heard from is true. As is proved, some UK primary schools will use 36 math textbook, exercise books, and teachers' guides publishing by the Shanghai Century Publishing (SCP). The textbooks will be used in both Shanghai or the UK at the same time. It is the first time that a developed country has been adopted Chinese textbooks in such systematic and large-scale way. The textbooks had been listed as a sample by the National Centre for Excellence in the Teaching of Mathematics of the UK. British publisher Harper Collins, the UK publisher of the textbooks, will be responsibly for the promotion of the schoolbooks, it has been permitted by SCP. We should, without doubt, take pride in yourselves.

把陈述句换成把字句

①一座堤坝被凶猛的洪水冲垮了。

②我终于取出了装在书包里的小人书。

    The meanings of colors play an important ____in our world. What a color pass to a person of the west, may be very ____to someone in the east. While a bride(新娘) may wear white to her wedding (婚礼) in Europe or America, a bride ____China may choose to wear a traditional red dress.

Here are some ____and what they represent (代表，象征) to various people of the world.

    RED

    In China red is a ____of luck and is used for many celebrations such as wedding and at the beginning of the New Year. In the United States red represents love and is used during Christmas and so on. Red is also represents ____and power in the west.

    BLUE

    People around the world think____and the sky with the color blue. For this reason, blue is widely ____with peace and calm. But to the Cherokees (切罗基族人), blue meant trouble or failure. In the United States we have come to connect the color blue with sadness.

    GREEN

    In Paris, all garage collectors are clothed in green, drive green trucks and the bins are also green. In many parts of the world,____ has become a symbol of kindness and the earth.

    YELLOW

    Yellow is a color that symbolizes the sun. In the United States, school buses and taxis are often yellow____they can catch the eyes. But to the Egyptians, yellow was a color of mourning (哀悼).

对《天上的街市》这首诗的主题理解正确的一项是（　　）。

用如图所示的滑轮组提升物体A，在把重力为180N物体A匀速竖直提升2m的过程中，卷扬机加在绳子自由端竖直向下的拉力F为100N，物体A上升的速度 $\upsilon$ A为0.1m/s，滑轮组的机械效率为 $\eta$ ，不计绳重和滑轮与轴的摩擦。 求：