2. 考研
  3. A. pollutant B. measured C. related A. and mainly traffic【T1】________ B. where you are directly in the path of the【T2】______

A. pollutant B. measured C. related A. and mainly traffic【T1】________ B. where you are directly in the path of the【T2】______

admin2021-09-23  2
问题 A.  pollutant
B.  measured
C.  related
A.  and mainly traffic【T1】________
B. where you are directly in the path of the【T2】________source
C. 【T3】________levels of exposure to ultrafine particles
    Researchers have discovered that your level of exposure to pollution can vary according to what method of transport you use. The researchers looked at five modes of transport, including walking, cycling, car, taxi and bus, and【T4】________when travelling on them. Ultrafine particles are less than 100 nanometers in diameter【T5】________Their small size and large surface area means it is possible to inhale large quantities which makes them particularly dangerous.
    It was a real surprise to find travelling by taxis resulted in the highest levels of exposure and walking the least. The higher exposure from travelling in taxis may come from actually sitting in the vehicle while being stuck in traffic【T6】________Also the fact that taxis are probably on the road for much longer than your average car could cause an accumulation of ultrafine particles.
【T1】
选项 A、 
B、 
C、 
答案C
解析 本题可以有两种理解：一是把traffic一并理解为作定语，那么空白处就需要填入一个名词，此时pollutant“污染物”合适；二是把traffic理解为名词，那么空白处就需要填入一个后置定语，这样的话measured和related都符合。但从语义上看，measured填入语段中意思不通，故可排除。其他两个备选项若还不确定，可以暂时跳过，先做下面的题。
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