资源简介

D
After the Apollo Moon missions in the 1970s,sending astronauts to Mars seemed the
next step,but it would be a "giant leap".Space is big:while it took the Apollo astronauts
only four days to reach the Moon,with present technology it would take about nine months to
reach Mars.Clearly some more work is needed before we can send humans to Mars.
Before deeiding to do such a risky journey,scientists have turned to various kinds of
Earth-based simulation (where astronauts would deal with extreme environments.The
latest took place in the Mars-like landscape of Hawaii.2,500m up the side of the Mauna Loa
volcano.On 28 August 2016,a group of six people came out after spending a full year there.
They had been allowed out on simulated Mars walks,but only wearing a full space suit.
Mars Society president Robert Zubrin has a better mission plan in his mind.It involves
first launching an unmanned Earth Return Vehicle (ERV)that would land on Mars and use
solar or nuclear power and imported hydrogen to produce methane and oxygen from Martian
CO2.This means that humans would set out only once they knew there would be a fuelled
return vehicle waiting for them on Mars.A second ERV would be launched at the same time
to provide back-up and.if all goes well,would be ready to bring the next team home two
years later.In this way,a series of return trips would build up a number of living spaces on
Mars for longer stays in the future.And because most of the fuel for the return trip would be
made on Mars,Zubrin believes huge energy and cost savings could be made.
Then,far,far in the future,once there are first bases,then colonies,on Mars,comes
the challenge of terraforming-making Mars like Earth.The stuff of science fiction Yes,
but as we've seen,so much of fiction becomes fact.
32.Why does the author mention the Apollo Moon missions
A.To argue that Mars is easy to reach.
B.To show the Moon trip was successful.
C.To compare Earth with other planets.
D.To highlight the challenge of a Mars trip.
33.What do we know about the team of six in Hawaii
A.They practiced living in a closed environment.
B.They designed new spacesuits for future trips.
C.They discovered a new kind of energy source.
D.They completed a true space flight successfully.
34.What is Zubrin's suggestion about Mars exploration
A.Sending humans to Mars at any cost.
B.Producing fuel for the return on Mars
C.Asking astronauts to walk freely on Mars.
D.Building more homes before sending humans.
35.What is the author's attitude toward sending humans to Mars
A.Critical.
B.Unclear.
C.Cautious.
D.Supportive.
第二节（共5小题：每小题2.5分，满分12.5分）
阅读下面短文，从短文后的选项中选出可以填人空白处的最佳选项。选项中有两
项为多余选项。
List-making,or writing things down on a list,is widely popular.From to-do lists to
bucket lists(愿望清单)，Iist-making is everywhere.Every time we finish a task and check
it off,we enjoy a little sense of satisfaction.36 It offers some deeper benefits as well.
Lists reduce anxiety.There's a well-known technique called "Worry Time".Whenever
you notice a worry,write it down.Tell yourself you can't worry about it until Worry Time,and
期末试题卷高一英语（下学期）第5页（共8页）

展开更多......

收起↑