良好的（）是提高政策执行力的基础。 A.政策执行动力机制 B.信息沟通机制 C.政策

毛 * * 等先进知识分子选择了马克思主义，这反映的本质问题是A．马克思主义自身具有无与伦比的科学性

B，只有马克思主义才能解决中国的社会问题，

C，先进知识分子勇于探索救国救民之路

D．向西方学习的思潮进人一个新的历史时期

If you dream of going someplace warm to escape the cold winter weather,a trip to a recently discovered planet would certainly warm you right up.The planet,named

OGLE-TR-56b,has temperatures of more than 3,000°F.“This is the hottest planet we know about,”says Dr Dimitar Sasselov,a scientist who led the discovery team.“It is hot enough to have an iron fog and to rain hot iron droplets(细沫).”

The new planet is 30 times farther away than any planet discovered by scientists

before.It is in the Milky Way(银河)but it is not in our solar(太阳的)system.The new planet moves around a star much like our sun,however scientists discovered the planet by using a new planetsearching method called transit technique.They were able to catch sight of the planet when it moved in front of its star,causing the star's light to dim(变暗).Scientists compare the method to discovering the shadow of a bee flying in front of a searchlight 200 miles away.“We believe the door has been opened wide to go and discover planets like the Earth,”says Sasselov.

1.We can infer from the passage that_________.

A.there is iron on the new planet

B.we could go to the new planet in winter

C.the star could block our view of the new planet

D.scientists are studying the weather

2.The “transit technique”can_____________.

A.help dim the light of a star

B.help scientists with a searchlight

C.help discover a bee on a planet

D.help find a planet moving before its star

3.Which is the best title for the passage?

A.New Planet searching Technique

B.New Distant Discovery

C.Space Searching

D.Dream Planet

步行训练的时机一般在患者达到______________以后，患腿承重达总体重的_______以上，并可向前迈步时才可开始。

布鲁纳认为学习包括获得、转化和______三个过程。