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【单选题】
在色散型红外分光光度计中,样品是放在 ________ 和 ________之间进行测定。A.
光源和单色器
B.
光源和检测器
C.
单色器和检测器
D.
检测器和数据处理器
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【简答题】What was the weather like in the southwest of England?
【单选题】听力原文： If a city ever needed tall buildings in a hurry, it was Chicago in the 1880s. Located in the center of America's farmland, with rail links to every coast, it was the natural hub of commerce for ...
A.
They used bricks and they are too heavy.
B.
They used bricks that were too expensive.
C.
Steel was in short supply.
D.
The benefits of steel were unknown to them.
【单选题】How was the weather in your country?
A.
What was the weather
B.
What was it
C.
What was the weather like
【单选题】A: ________ B: It was snowy. [ ]
A.
What was the weather like yesterday?
B.
How was the weather yesterday? C How was the food? D. A and B
【单选题】How was the weather in your country?
A.
What was the weather
B.
What was it
C.
What was the weather like
D.
What is it
【简答题】How was the weather in the country?
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