HaveyoueverwonderedwhetherwhereislifeonMars?ThebogRedP...
问题详情:
Have you ever wondered whether where is life on Mars? The bog Red Planet is a mystery to us but ___61__ (hope) not for much longer.
On November 11, the Mars rover(漫步者) ___62__ (name) Curiosity started its journey into space. After eight months flying in a rocket, Curiosity covered more than 566 million kilometers and finally landed on Mars --- according to BBC reports.
The rover is there ___63__(find) out if there is, or ever was, life on the cold, desert-like planet.
The place ___64__ Curiosity landed is called Gale Crater, a huge hole on Mars. Scientists believe that there ___65__(be) once water and even life there.
In order to do its job, Curiosity is packed with many ___66__(use) tools, though it is only three meters long, about the size of a small car.
It has a robot arm that can collect soil and drill into rock. It also carries ___67__ own laser gun. The gun can turn a small amount of rock into gas, so that Curiosity can study what the rock ___68__(make) up of.
___69__ the help of these tools, Curiosity will act as a robot geologist. For the next two years, it will stay and travel inside Gale Crater, ___70__(collect) and studying rock and soil.
【回答】
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知识点:语法填空
题型:未分类
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问题详情:近日我州某地成功处置了一辆满载三*化*(PCI3)的车辆泄漏事故.三*化*是一种重要的无机盐工业产品,无*液体、密度1.574g/cm3(21℃),熔点﹣112℃,沸点75.5℃,易燃.遇水反应生成亚**(H3PO3)和*化*,与有机物接触会着火.下列对三*化*的说法错误的是()A.三*化*中*元素的化合价为+...
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在恒温、体积为2L的密闭容器中进行反应:2A(g)⇌3B(g)+C(g),若反应物在前20sA物质由3mol降...
问题详情:在恒温、体积为2L的密闭容器中进行反应:2A(g)⇌3B(g)+C(g),若反应物在前20sA物质由3mol降为1.8mol,则前20s的平均反应速度为()A.v(B)=0.03mol/(L•s)B.v(B)=0.045mol/(L•s)C.v(C)=0.03mol/(L•s)D.v(C)=0.06mol/(L•s)【回答】考点:化学反应速率和化学计量数的关系.专题:化学反应速率专...
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问题详情:设复数(是虚数单位),则复数的虚部为( )A. B. C. D.【回答】B知识点:数系的扩充与复数的引入题型:选择题...
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反比例函数与直线相交于点点的横坐标为,则此反比例函数的解析式为( ) A. ...
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