题目
题型:模拟题难度:来源:
the light of the sun is as necessary to life as its heat. Another important source of light is produced by electric
sparks in tubes which has special gases. That is known as indirect light. The light we see directly from the
source of light, such as sun, is known as direct light.
Laser (激光) is a new kind of light source. It possesses a series of remarkable properties, which makes it
a better light source in a number of cases.
B: Sunlight is colourless.
C: Indirect light is sent from the power station and so on.
D: Human beings as well as all animals depend on direct light.
答案
核心考点
试题【Reading comprehension. The sun is the largest source of light. We know that 】;主要考察你对教育文化类等知识点的理解。[详细]
举一反三
earth and where it would be in the sky at different times of the year. At that time, everything about the moon
was learned by watching it carefully in the sky.
When scientists could use telescopes to study the moon more closely, their ideas began to change. They
could see the moon was made of rocks. Most scientists thought moon rocks would be different from those on
Earth. This was because they believed the moon had once been a planet that had been caught in the earth"s
gravity (引力) millions of years earlier.
In 1969 moon rocks were finally brought to the earth and studied. Much to their surprise, scientists
found that, except for water, the moon and the earth were made of the same things. Once again new ideas
were needed for this new information.
After years of study, most scientists now think that the moon was once part of Earth. They believe very
early in its history, maybe 4 million years ago, something about the size of Mars hit Earth. This sent billions of
rocks into space around our planet. These rocks slowly joined together and after many years became the moon.
In the future, even though our ideas about the moon may change again, we will still be interested in it.
B. Moon was once a part of Earth.
C. Moon moves around Earth and it"s the only satellite of Earth.
D. Moon was once a planet caught in Earth"s gravity.
But there"s a lot going on in your mind and body while you are sleeping.
Sleep, in fact, is as important to your survival as eating and drinking. Sleep improves your mood,
makes you a better athlete, and helps you remember and understand what you learned during the day.
During sleep, your temperature drops. Your heart beats slowly. A chemical that controls growth,
which is called a hormone (荷尔蒙), moves into your bloodstream. Scientists think that sleep brings back
energy and improves your immune (免疫) system. We know what happens while we"re asleep because
scientists study volunteers who sleep in laboratories. The sleepers are connected with machines that
measure brain waves, eye movements and muscle activities.
Sleep is like a school day: it"s divided into different stages (阶段). When you are awake, your brain
waves fire rapidly (迅速地). As you begin to relax and drift into the first stage of sleep, your brain produces
slower-moving waves and you lose awareness (意识) of your surroundings. As you fall into deeper sleep,
your body repairs itself from the normal wear and tear of daily life. Then, as you begin to drift back up to
a lighter sleep, your mind becomes more alert (警觉的), and your dreams begin. You are in REM sleep.
REM is the name for the rapid eye movement that happens while you are dreaming. During REM sleep,
your eyes move back and forth behind your lids, as though you were watching a movie. During other
stages, you might move in bed, but during REM sleep you"re not making any movement. That"s probably
because if you could move, your body would act out your dreams. As you get close to morning, you
spend more time in REM than in deep sleep, so you dream more. Researchers know that during REM sleep
the part of the brain that deals with learning and thinking is very active.
Getting too little sleep can affect your personality. Experts recommend that children get at least nine
hours"sleep a night.
B. making you strong
C. helping you study
D. practising your eyes
① your body repairs itself from the normal wear and tear of daily life
② your brain produces slower-moving waves
③ your dream begins
④ you lose awareness of surroundings Choose the right order:
B. ②④①③
C. ④①③②
D. ④③①②
Spring Festival holiday draws closer.
Sarah Combes a social worker at the Vista Clinic, ①建议人们参加许多活动并享受各类庆祝.
"We live in a busy city culture that tells us to do, do, do,"she said."But winter is a time when our bodies
and,minds need to rest. It is okay not to be as active as in the summer."
Combes believes it is okay to spend time by oneself, especially when you are around people all the time.
But she believes during the Chinese Spring Festival, ②we all need to spend time with others so that we can
enjoy such a special and exciting time of the year.
Most people find they eat and sleep a little more in winter and dislike the dark mornings and chilly (寒冷)
days. ③We it to all find hard get of bed out
④That is common for many people because our bodies and minds take time to adjust to any change in
Lifestyle or weather.
The important thing is not to stay down.⑤"Get back up and keep on going, then we will see the rich
culture and warm people" Combes said,"This will make us fell merry."
1. 将①处汉语句子翻译成英语:______________________________________________
2. 将②处划线句子改为简单句:_____________________________________________
3. 将③处斜写体的单词组成一个句子:_________________________________________
4. 将④处句子翻译成汉语:_________________________________________________
5. 将⑤处划线句子改成复合语:______________________________________________
and which replace human labor in industrial operations. Many are man-made arms which reach into areas man
enters only at the cost of his life, such as the inside of a nuclear reactor (核反应堆).
Already in 1980, there were over 8000 such robots working in industrial plants throughout the world.
The big change over to the robot, however, is likely to come only when their costs go down while workers"
wages continue to rise.
B:to operate computers
C:to direct electronic brains
D:to take the place of human workers
crops. Some areas are also covered with hard, black lava (熔岩) on which nothing can grow. Even so,
Hawaii produces large quantities of farm products.
The volcanic (火山的) soil in the valleys and lowlands is very rich, and the warm climate makes it
possible to grow crops all year long. Rainfall is plentiful on the northern and eastern sides of each island.
Much of the land on the southern and western sides of each island receives too little rainfall for most crops
to grow well, but in many of the places where rainfall is light, wells and mountain streams supply water for
irrigation.
B: market system
C: farming conditions
D: living conditions
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