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【单选题】
不分光红外线气体分析仪是从汽车排气管内搜集取出汽车的尾气,并对气体中所含有的哪种物质的浓度进行连续测定。(2011)A.
CO和NOx
B.
CO和HC
C.
HC和Nox
D.
CO2和HC
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举一反三
【单选题】The residents, ______ had been damaged by the fire, were given help by the Read Cross.
A.
all of their homes
B.
all their homes
C.
whose all homes
D.
all of whose homes
【简答题】“隔墙有耳”和“凿壁偷光”两个成语说明声音比光更具有穿透性,这是由于声波的波长比光波长,更容易发生 ________ 现象(“干涉”或“衍射”)。
【单选题】The residents, ______ had been damaged by the flood, were given help by the Red Cross.
A.
all their homes
B.
all whose homes
C.
all of whose homes
D.
all of their homes
【简答题】Two of _________(big) earthquakes that were ever recorded tood place in China and Alaska.
【单选题】Betty was ______ all sorts of terrible things that might happen to her if she were left alone in the mountain.
A.
imagining
B.
guessing
C.
supposing
【简答题】短文改错： The age year from 13 to 19 were the most difficult time for me.They were also the best and worse years in my life.At the first, I thought I knew everything and could make decisions by yourse...
【单选题】The residents, ______ had been damaged by the flood, were given help by the Red Cross.
A.
all their homes
B.
all of whose homes
C.
whose all home
D.
all of their homes
【简答题】周皮是由初生分生组织细胞分裂、分化产生的，由木栓层、木栓形成层、栓内层三部分构成。( )
【单选题】How many people were wounded in the violence erupted in Yabna refugee camp after Raed al-Attar was condemned to death?
A.
17.
B.
6.
C.
20.
D.
25.
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