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What was the temperature？
A．30 degrees.
B．28 degrees.
C．25 degrees.
答案
更多“What was the temperature？A．30 degrees.B．28 degrees.C．25 degrees.”相关的问题
第1题
根据以下材料，回答题
What Is the Coolest Gas in the Universe？
What is the coldest air temperature ever recorded on the Earth？ Where was this low temperature recorded？ The coldest recorded temperature on Earth was -91℃ which__________（1） in Antarctica in 1983.
We encounter an interesting situation when we discuss temperatures in__________ （2）.
Temperatures in Earth orbit actually range from about +120~C to -120~C. The temperature depends upon __________（3） you are in direct sunlight or shade. Obviously， -1200C is colder than our body can safely endure. Thank NASA science for well-designed space __________（4） that protect astronauts from these temperature extremes.
The space temperatures just discussed affect only our area of the solar __________（5）.
Obviously， it is hotter closer to the Sun and colder as we travel away from the Sun. Astronomers estimate temperatures at Pluto are about -210~C. How cold is the lowest estimated temperature in the entire universe？ Again， it depends upon your __________（6）. We are taught it is supposedly__________ （7） to have a temperature below absolute zero， which is-273"C， at which atoms do not move. Two scientists， whose names are Cornell and Wieman， have successfully cooled down a gas temperature barely __________（8） absolute zero. They won a Nobel Prize in Physics in 2001 for their work —— not a discovery， in this case.
Why is the two scientists" work so important to science？
In the 1920s， Satyendra Nath Bose was studying an interesting__________（9） about particles we now call photons. Bose had trouble__________（10） other scientists to believe__________（11）he contacted Albert Einstein. Einstein"s calculations helped him theorize__________（12） behave as Bose thought——but only at very cold temperatures.
Scientists have also discovered that__________ （13） atoms can help them make the world"s atomic clocks even more accurate. These clocks are so accurate today they would only lose one second__________ （14） six million years! Such accuracy will help us travel in space because distance is velocity times time （d——vxt）. With the long distances involved in space __________（15） to know time as accurately as possible to get accurate distance.
回答（1）题 查看材料
A.opened
B.occurred
C.opposed
D.operated
第2题
听力原文：F：What do you think is the cause of the output reduction in summer？
M：Well，due to high replacement rate and low efficiency from fill-in workers，we just don't make as many bicycle
frames as we do during the rest of the year．
F：Where does the high replacement rate come from？
M：Good question．Both the high replacement rate and low efficiency are because of the extreme heat in the workshop．The average temperatures inside the workshop are 6℃ over the outside tempera tures．During the summer，when work starts at 8：00，it's already 31℃ in the workshop．By 11：30， it's at least 37℃．On six days last summer．it hit 41℃．
F：That's hot!
M：Yes．And as you know，these workers are always working on，moving or carrying bicycle frames，which weigh as
much as 8 kilos．When temperatures are 35℃，they slow down．When they feel it's too hard to put up with，they quit．
F：How many was it again？
M：Well，this summer we have already changed 11 of the 36 employees in the workshop．Replacement rate for the whole
summer will usually run over 50%．When someone quits，it takes an average of five days to find and train a fill-in worker．During that time，the trainee produces nothing．For another five days，the new person can work at only about half
speed．According to my calculations，we are producing 12，300 less units per summer than we would without this replacement rate．
F：Is it really that much？
M：Yes，and figuring a profit of $16 on every bike we sell，those 12，300 products we aren't making are costing us 196，800 dollars in potential earnings.
&8226;Look at the meeting notes below．
&8226;Some information is missing．
&8226;You will hear Steve，a manager from a bicycle frame. manufacturer，talking with his colleagues about a difficult situation they have every summer．
&8226;For each question 9-15．fill in the missing information in the numbered space using a word，numbers or letters．
&8226;You will hear the cOnversation twice．
Meeting Notes
The problem：Cause of the output(9)______of bicycle frames
High(10)______rate & Low(11)______from fill-in workers
[Caused by extreme heat in the workshop]
The temperature records：
—Average temperature difference inside and outside the workshop：(12)______℃The highest temperature record last summer：41℃
Current situation：
—11 of the 36．employees have been changed
—It takes about(13)______days altogether to find a new worker，train him and make him as productive as the old employees．
Loss：
Producing(14)______less units per summer．
Costing(15)______dollars in potential earnings．
(9)
第8题
What are in the box？ ______.
A．Bananas
B．Oranges
C．Apples
