题目内容
13．Chinese herbs have proved effective in the cure of H1N1flu in Ditan Hospital，Beijing _____ 88out of 117patients treated for the disease only on the herbs fully recovered．（ ）
| A． | why | B． | where | C． | that | D． | what |
分析 在北京地坛医院，中药在治愈H1N1流感中已经被证明有效．仅靠中药治疗的一百一十七位病人中有八十八位完全康复．
解答 答案：C 题干中88out of 117patients treated for the disease only on the herbs fully recovered是解释cure的内容，是一个同位语从句．故选C．
点评 同位语从句属于名词性从句，大多由从属连词that引导，常常跟在fact，idea，opinion，news，hope，belief等名词后面．同位语从句一般用来解释或说明这些名词的具体含义或内容，在逻辑上表现为同位关系．
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Forests in the northern half of the globe could be growing faster now than they were 200years ago as a result of climate change，according to a study of trees in eastern America．The trees appear to have faster growth rates due to longer growing seasons and higher concentrations （浓度） of carbon dioxide in the（41）F．
Geoffrey Parker，a scientist at the Smithsonian Environmental Research Centre in Edgewater．Maryland，said that the increase ha the rate of growth was unexpected and might be （42）G to the higher temperatures and longer growing seasons documented in the region．The growth may also be influenced by the significant （43）Jin atmospheric CO2，he said．
"We made a list of reasons these forests could be growing faster and then excluded half of them，"Dr Parker said．Their study suggests that northern forests may become increasingly important in（44）H the influence of man-made CO2on the climate．
Dr Parker and his colleagues have （45）Iout a detailed record of the trees on a（n）（46）Cbasis since 1987．They calculated that due to the global warming the forest is producing（47）A tons of wood each year．
The scientists （48）E the land with trees at different stages of growth and found that both young and old trees were showing increased growth rate．More than 90percent of the tree groups had grown by between two and four times faster than the scientists had（49）Dfrom estimates of the long-term rates of growth．
| A．additional B．producing C．regular D．predicted E．identified E atmosphere G．matched H．reducing I．carried J．increase |
Geoffrey Parker，a scientist at the Smithsonian Environmental Research Centre in Edgewater．Maryland，said that the increase ha the rate of growth was unexpected and might be （42）G to the higher temperatures and longer growing seasons documented in the region．The growth may also be influenced by the significant （43）Jin atmospheric CO2，he said．
"We made a list of reasons these forests could be growing faster and then excluded half of them，"Dr Parker said．Their study suggests that northern forests may become increasingly important in（44）H the influence of man-made CO2on the climate．
Dr Parker and his colleagues have （45）Iout a detailed record of the trees on a（n）（46）Cbasis since 1987．They calculated that due to the global warming the forest is producing（47）A tons of wood each year．
The scientists （48）E the land with trees at different stages of growth and found that both young and old trees were showing increased growth rate．More than 90percent of the tree groups had grown by between two and four times faster than the scientists had（49）Dfrom estimates of the long-term rates of growth．
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