阅读理解。 HAVE you ever thought of being ab

题型:阅读理解

问题:

阅读理解。

     HAVE you ever thought of being able to fly around the world in a few hours though it is about 40,000

kilometers? Now, maybe you can. Last Saturday, the American X-43A airplane made its first flight. It

reached a speed of 8,000 kilometers an hour. This makes it the fastest plane in the world. X-43A is only

three to four meters long,but it's very heavy: it weights 1,270 kilos.

     HOW old cart an insect be? 400 million years! Last Wednesday, scientists found the world's oldest insect

fossil (化石) in Britain. The fossil shows that the body of the insect was as big as a piece of rice and had

wings (翅膀). In the past, people thought the earliest insect was 380 million years old.

    THERE will be a new "star" in the sky soon. China plans to send a satellite (卫星) into space by September

2009. It will stay in space for one year. It will go around the moon and take pictures. It must be very

expensive, right? That's for sure-1.4 billion yuan! 

    Yuan Longping, the father of hybrid rice (杂交水稻), won the World Food Prize on Monday. Yuan

developed the world's first popular and widely grown hybrid rice. Hybrid rice plants can make more rice

than the ones people grew before.

1.If the X-43A goes round the earth, it will take about ______ hours to finish the trip. [ ]

A.3

B.5

C.8

D.12

2.The newly-found insect fossil showed that the earliest insect was ______ years older than believed. [ ]

A.10 million

B.400 million

C.20 million

D.380 million

3.Which of the following about the new star is NOT true? [ ]

A.It will go into space by September 2008.

B.It will stay in space for twelve months.

C.It costs a lot.

D.It will go around the moon.

4.Yuan Longping won the World's Food Prize because he ______. [ ]

A.is the father of his children.

B.likes to eat hybrid rice.

C.developed the world's first popular and widely grown hybrid rice.

D.grows more rice than others.

5.The above paragraphs are taken from ______. [ ]

A.a story

B.an advertisement

C.an explaining writing

D.a newspaper

考点:科教类阅读
题型:阅读理解

被称为万能还原剂的NaBH4溶于水并和水反应:NaBH4+2H2O=NaBO2+4H2↑,下列说法中正确的是(NaBH4中H元素为-1价):(  )

A.NaBH4既是氧化剂以是还原剂

B.NaBH4是还原剂,H2O是氧化剂

C.硼元素被氧化,氢元素被还原

D.被氧化的元素与被还原的元素质量比为1:2

题型:阅读理解

审计证据的作用在于它能支持审计结论性意见。审计意见要令人信服,就必须要以充分适当的审计证据为依据。

题型:阅读理解

关节损伤者在运动时需要限制进行特殊类型的活动

题型:阅读理解

中华人民共和国公民,不分民族、种族、职业、家庭出身、宗教信仰和教育程度,都有()依照法律的规定服兵役。

A、责任

B、义务

C、权利

题型:阅读理解

气缸磨损量过大肯定会导致发动机输出功率下降。

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