网址：http://m.1010jiajiao.com/timu3_id_3033517[举报]
Sage, a 19-year-old American, who used to study astronomy at a California college, likes to help us watch stars ________ space through telescope.
[ ]
Chapter I．PARTS OF THE SOLAR SYSTEM 3
The sun 3
The Planets 15
The Stars 47
Chapter II．STUDY AND EXPLORATION 55
The First Astronomers 55
The Telescope 67
Space Travel 73
1．On which page would you begin reading to learn about spaceship that have traveled from the earth to other planets ? ______．
[ ]
A．15 B．55 C．73 D．47
2．On which page would you begin reading to learn about the orbits（运行轨道）of the planets ? ______．
[ ]
A．3 B．15 C．47 D．63
3．What is the name of the section that might tell how ancient Egytians studied the planets ? ______．
[ ]
A．The Planets B．The First Astronomers
C．Space Travel D．The Telescope
4．What is the first page of the section in which you might learn the temperature of sun ? ______．
[ ]
A．3 B．67 C．14 D．54
5．Which pages might include information about lenses（透镜）and mirrors that are used to magnify（放大）distant objects ? ______．
[ ]
A．47～54 B．55～67 C．67～72 D．15～46
查看习题详情和答案>>He built a telescope he could study the skies.
A．by it B．through which C．with that D．in which
查看习题详情和答案>>
For over 350 years men have used telescopes to find out more about the stars and planets. Our knowledge of the stars has increased very greatly since Galileo, the famous Italian scientist, made the first telescope in 1609. Men have used telescopes to study the moon's surface-- its craters（环形山）, mountains and plains. Now men have recently built bigger and more powerful telescopes. They have discovered new groups of stars. Modern telescopes have shown us that certain stars are not single at all; they are groups of millions of stars.
The largest telescope in the world has a mirror which is 200 inches wide. It is at Mount Palomar in America and it has shown us millions of new stars. The light from these stars has taken a million years to reach the earth.
(1) It is ________ years since Galileo made the first telescope.
[ ]
(2) With the help of telescopes, scientists can ________.
[ ]
A．discover more stars and planets
B．get knowledge from the sky
C．study the craters, mountains and plains on the moon's surface
D．increase more knowledge of the earth
(3) Through telescopes men have discovered that ________
[ ]
A．many more new groups of millions of stars remain unknown to us
B．stars are not in a single group
C．bigger and more powerful telescopes have been built recently
D．certain stars are not single but in millions of groups
(4) The largest telescope in the world ________.
[ ]
A．has recently been built in America
B．is 200 inches wide
C．has shown millions of new stars to us
D．is the most powerful one at Mount Palomar in the U.S.
查看习题详情和答案>>阅读下面短文，掌握其大意，然后从各题所给的四个选项中，选出一个最佳答案.
Jungle country is not friendly to man, but is possible to survive there. You must have the right 1 and you must 2 a few important things about the jungle. Then your chances of staying 3 are very good. In the jungle, you should always carry a 4 , Then you can 5 which way to go. Again and again you must alert（警惕）your 6 by it. Keep 7 . 8 the ground in front of you carefully. Stop and listen 9 .
If you lose your 10 , do not be 11 . Mark the 12 where you are with blazes on a tree. Then you can always know where you started.
Finding water that is safe to drink can be a 13 . Many streams and rivers carry germs that can be 14 to man. 15 , the jungle has many kinds of plants and vines that give water.
16 in the jungle is a science. Learn as much as you can about what to 17 in the jungle. Then no part of the jungle will seem completely unfriendly or 18 . 19 , you will be able to“ 20 ”it for a long time.
（1）
[ ]
（2）
[ ]
（3）
[ ]
（4）
[ ]
（5）
[ ]
（6）
[ ]
（7）
[ ]
（8）
[ ]
（9）
[ ]
（10）
[ ]
（11）
[ ]
（12）
[ ]
（13）
[ ]
（14）
[ ]
（15）
[ ]
（16）
[ ]
（17）
[ ]
（18）
[ ]
（19）
[ ]
（20）
[ ]