题目内容
17．_____ myself enough time to catch the train，I set my alarm for five in the morning．（ ）| A． | Give | B． | Being given | C． | To give | D． | Given |
分析 为了给自己足够的时间赶火车，我把闹钟调到了早上五点．
解答 答案：C
不等式作目的状语．题干所给句子中间有逗号分隔，没有连词，要用非谓语动词；give与句子的主语I之间构成主动关系．故选C．
点评 不等式是非谓语动词的一种，用法灵活．按句子成分来划分有：主语（通常借助形式主语it）；宾语/表语；定语；状语；补语等．
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9．
Are Sweeteners （甜味剂） Safe and Healthy？
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| A．artificial B．especially C．substitute D．extra E．preventing F．concerns G．rotten H．enduring I．inadequately J．approved K．evidence |
For many of us，the relationship we have with sugar is love at first taste，and that love usually lasts a lifetime．But what price do we have to pay for this truly addictive，sugary love？Type 2 diabetes （糖尿病）？Heavier bodies？Raised blood sugar levels？Or even（41）Gteeth？
Time to quit perhaps？Easier said than done．What's the alternative？Many would suggest using sweeteners as a（42）C．But are sweeteners healthier than sugar？
Sweeteners are usually low-calorie （卡路里） or calorie-free substances that have a similar taste to sugar．It is estimated that more than a quarter of British households buy（43）Asweeteners to help cut their sugar intake．
The European Food Safety Authority （EFSA） has（44）Jsome of the health claims food manufacturers have made about sweeteners such as xylitol，sorbitol and sucralose．These include（45）Etooth decay and controlling blood sugar levels．
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But many have（48）Fover the long-term effects caused by using sweeteners．Dr Robert Lustig，author of‘Fat Chance：The Bitter Truth About Sugar'would not accept sweeteners as an alternative to sugar because，"We lack data"．According to Dr Lustig，organisations like EFSA only require studies which test whether something will poison a person in a short period of time，which is known as acute toxicity （急性毒性） studies．But we still don't know what the（49）Heffects are．
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