改错:(2020·河南省南阳市第一中学高三上学期第三次月考)It is estimated that over 10% of the senior high school students have tried smoking once or more and some of them even steal money from their parent to buy cigarettes, that is terrible. ________________________________________________________________________ 答案:that→which 此句引导非限定性定语从句,不能用that引导非限定性定语从句,应该用which。Four hundred years ago, an Italian
scientist named Galileo Galilei became the first person to see the craters(环形山) on the moon. Galileo was
one of the first people to use a telescope to study the sky. Since then,
telescopes have become the most important tool used by astronomers. Scientists
never stop finding new ways to make these instruments more powerful. In the
next several years, two new telescopes with different purposes are to be used.
One of the telescopes, called Pan-STARRS,
could save humans from dying out. Nick Kaiser, a scientist who works on the
project, says the Pan-STARRS telescope has been designed to find “90 percent of
all killer asteroids(小行星) near Earth”.
Pan-STARRS, like most telescopes, uses
mirrors and lenses(透镜) to provide pictures of outer space. Giant mirrors are used to
“gather” light. They reflect the light onto the lens of a camera, which can
then record the image.
When completed, Pan-STARRS will include
four telescopes which will be put on top of a mountain on the Hawaiian island
of Maui. Only one telescope is in place and working now. Each telescope will
take pictures of one patch of sky for about 30 seconds, and then move on to
another patch. Every night, each telescope will take pictures of about 1,000
patches. Every week, each telescope will have photographed the whole sky.
Each of the four telescopes will take
pictures of the same patches of sky. One telescope, working alone, may
sometimes incorrectly show an asteroid. If there are three other telescopes
working, astronomers can use them to see if there really is an asteroid coming
our way. By using four telescopes instead of one, scientists hope to get a
better picture of space. If a giant asteroid was identified, astronomers would
try to break it up long before it reached Earth.
1. Galileo Galilei is mentioned to
____________.
A.tell us the history of telescopes
B.introduce the topic of the passage
C.show people his contributions
D.tell us about the craters on the moon
2. For what purpose is Pan-STARRS designed?
A.To find more asteroids around Earth.
B.To help scientists know Earth better.
C.To find killer asteroids coming towards Earth.
D.To learn about asteroids in outer space.
3.What is paragraph 3 mainly about?
A.The use of mirrors in a telescope.
B.Why Pan-STARRS is different.
C.How telescope “gather” light
D.How a telescope works.
4.How many patches is the whole sky divided
into when Pan-STARRS is working?
A.1,000
B.7,000
C.21,000
D.28,000
5. The four telescopes will take pictures
of the same patches of sky because _____.
A.one telescope often takes unclear pictures
B.one telescope may provide incorrect information
C.information from just one telescope is usually incorrect
D.no information is allowed to be identified based on single
information