A.1位上的脂肪烃基
B.6位的氟原子
C.3位的羧基和4位的酮羰基
D.7位的脂肪杂环
E.1位氮原子
第2题
听力原文:W: Why are you wet?
M: Because I forgot to take an umbrella with me.
What's the weather like?
A.Sunny.
B.Rainy.
C.Windy.
第3题
根据下列材料请回答 31~35 题:
A
Now satellites are helping to forecast the weather.They are in space,and they can reach any part of the world.The satellites take pictures of the atmosphere(大气),because this is where the weather form.They send these pictures to the weather stations.So meteorologists(气象学家)can see the weather of any part of the world.From the pictures,the scientists can often say how the weather will change.
Today,nearly five hundred weather stations in sixty countries receive satellite pictures.When they receive new pictures,the meteorologists compare them with earlier ones.Perhaps they may find that the clouds have changed during the last few hours.This may mean that the weather on the ground may soon change,too.In their next weather forecast,the meteorologists can say this.
So the weather satellites are a great help to the meteorologists.Before satellites were invented,the scientists could forecast the weather for about 24 0r 48 hours.Now they can make good forecasts for three or five days.Soon,perhaps,they may be able to forecast the weather for a week or more ahead.
第 31 题 Satellites travel______.
A.in space
B.in the atmosphere
C.above the ground
D.above space
第4题
听力原文:Why do we need to take two taxis to the restaurant?
(A) There's too many of us to fit in one.
(B) The new Italian place on Clover Street.
(C) Yes, I think that will be enough.
(15)
A.
B.
C.
第5题
Now satellites are helping to forecast(预报) the weather. From space,they can see any part of the earth. These satellites take pictures of the atmosphere (大气), because this is where the weather forms. These pictures are sent to weather stations on earth. Meteorologists (气象学家)can see the weather of any part of the world. From the pictures, the scientists can often see how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can report this.
So weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon,perhaps,they may be able to forecast the weather for a week or more ahead.
Satellites travel__________
A.in space
B.in the atmosphere
C.above the ground
D.above space
第6题
The observation of weather conditions by satellites is advantageous because it ______.
A.enables man to alter the weather
B.makes weather prediction easier
C.gives the scientific information not obtained readily otherwise
D.uses electronic instruments
第7题
A good title for this passage would be: ______.
A.Why Do We Take Aspirin?
B.How Do We Take Aspirin?
C.Aspirin: The Unknown Side Effects.
D.Aspirin: The Most Popular Medicine.
第8题
Planning our vocation we must take the frequent______of the weather into consideration.
A.transformation
B.transmission
C.transaction
D.transition
第9题
__________ the weather was going to take a turn for the worse,we decided to stay at home.
A.But that
B.Seeing that
C.As for
D.As to
第10题
The observation of weather conditions by satellites is advantageous because it ______.
A.gives the scientist information not obtained readily otherwise
B.enables man to alter the weather
C.uses electronic instruments
D.is modern
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