17.A group of college students is hoping to place a satellite powered only by water into an orbit aroud the moon.
The students are from Cornell University in the state of New York.They are takking part in a compete team is called the CisLunar Explorers.The word cislunar means"between Eatrth and the-moon".
The challenge is simple:to design,build and deliver
"flight-qualified,small satellites".NASA official say the satellites must be able to perform"advanced operations near and beyond the moon".
Ten teams are taking part in the competition.But the CisLunar Kxplorer satellites are the only ones using water to power their spaceceraft.The idea for a water-powered vehicle came from Mason Peck,who works at Cornell University.He has always wanted to use something other than rockets to push beyond earth.
The craft is two connected satellites,both shaped like the English latter"I".Water is storel in the lower part of the satellite.The sun will separate the water into two elements:bydrogen and oxy-gen.When one combines hydrogen and oxygen with a spark (火花)an explosion results.This pro-vides a forward movement,known as thrust.
Another cool thing about the CixLunar Explorer is how the team is teaching it to navigate its way through spare.The idea in to ropy how old-lime sailors used the moon,sun and stars to fix their posi-tion on the oceans.The satellite is equipped with cameras.The cameras will takepictures of their sun,Earth and the moon and compare their positions and theirsize.Based on wherethe sun,moon and Earth are at any given time,the Cislunar Explorers will do the matheroatics to find their position.
33.What do the Cornell students plan to do?D
A.Place an earth satellite into orbit.
B.Meet the challenge of joining NASA.
C.Explore space by means of satellites.
D.Send up a water-powered moon salellite.
34.What can we learn about the CisLunar Explorer satellites?A
A.Theyare unusual.
B.They areordinary.
C.Theyare simple.
D.They areexpensive.
35.How do the CisLunar Explorer find inspiration for guiding their spacecraft?C
A.By Inking space pictures.
B.By doingcomputingtasks.
C.From the ancient sailors.
D.From theposition ofthem oceans.
分析 本文介紹了在一個(gè)科技競賽中,一組大學(xué)生嘗試能能將一顆僅由水驅(qū)動的衛(wèi)星送入月球軌道.
解答 33.D.細(xì)節(jié)理解題.由第一段A group of college students is hoping to place a satellite powered only by water into an orbit aroud the moon可知一組大學(xué)生希望能將一顆僅由水驅(qū)動的衛(wèi)星送入月球軌道,故選D.
34.A.理解推斷題.由第三段Ten teams are taking part in the competition.But the CisLunar Kxplorer satellites are the only ones using water to power their spaceceraft可知,共有十個(gè)團(tuán)隊(duì)參加比賽,但他們的衛(wèi)星是唯一使用水力作為動力的,因此很特別,故選A.
35.C.理解推斷題.由最后一段The idea in to ropy how old-lime sailors used the moon,sun and stars to fix their posi-tion on the oceans可知,他們的想法來自古時(shí)的水手,故選C.
點(diǎn)評 本篇閱讀難度比一般閱讀較大,它存在的生詞比較多,因此考生應(yīng)當(dāng)綜合略讀、跳讀和查讀,猜詞等閱讀技巧來做題,平時(shí)也應(yīng)加強(qiáng)練習(xí).