（2021·浙江嘉兴市·高一期末）阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
Do you remember a time when you had no worries stopping you from getting a good night's rest?199．(fortunate), your happy childhood is probably a thing of the past.
A recent survey has found that many people suffer200．sleep problems. Some are unable to fall201．(sleep), some wake up in the middle of the night, and others simply do not get enough sleep. One of the reasons why people fail to get a good night's sleep202．(be) pressure from school or work. Noise pollution and light pollution in big203．(city) may also contribute to sleep problems. In the short term, people with sleep problems often feel tired and have trouble204．(concentrate). In the long term, they may be at increased risk of having 205．poor memory, being overweight and suffering a heart attack. Sleep problems are especially dangerous for teenagers. They are still growing, and night is the time when206．(they) bodies grow faster. Teenagers who do not get enough sleep may experience situations207．body development slows down, and their health suffers.
So, if you have a sleep problem, it might be time208． (make) some changes in your lifestyle.
199．Unfortunately
200．from
201．asleep
202．is
203．cities
204．concentrating
205．a
206．their
207．where
208．to make
【分析】
这是一篇说明文。文章分析了导致人们睡眠问题的原因和睡眠不好可能引发的问题。
199．
考查副词。句意：不幸的是，你快乐的童年可能已经成为过去了。“快乐的童年成为过去”是一件不幸的事情，且该空修饰整个句子，应该用副词。故填Unfortunately。
200．
考查介词。句意：最近的一个调查发现很多人都患有睡眠问题。suffer常和from搭配，表示“患有……疾病，遭受……之苦”。故填from。
201．
考查形容词。句意：一些人不能够入睡。fall asleep是固定短语，意为“入睡”。其中，asleep是形容词，作表语。故填asleep。
202．
考查时态和主谓一致。句意：人们不能睡个好觉的原因之一是来自学校或工作的压力。该句是对人们不能睡个好觉的客观分析，应用一般现在时态。且主语是one，根据主谓一致原则，谓语动词用第三人称单数形式。故填is。
203．
考查名词。句意：大城市的噪音污染和光污染也可能导致睡眠问题。city是可数名词，大城市不止一个，前面无冠词，应用名词复数形式。故填cities。
204．
考查动名词。句意：在短期内，有睡眠问题的人通常会感到疲劳，难以集中注意力。have trouble (in) doing sth.是固定句式，意为“做某事困难”，in后面接动名词作宾语，故填concentrating。
205．
考查冠词。句意：从长远来看，他们记忆力差、超重和患心脏病的风险可能会增加。memory是可数名词，常和不定冠词a连用。a good memory意为“好的记忆力”。故填a。
206．
考查代词。句意：他们还在生长，而夜晚是他们的身体生长得更快的时候。该空修饰bodies，应用形容词性物主代词，表示“他们的”，故填their。
207．
考查定语从句。句意：睡眠不足的青少年可能会经历身体发育迟缓和健康受损的情况。________ body development slows down, and their health suffers是定语从句，修饰situations，关系词在从句中作抽象地点状语，应用关系副词where引导该从句。故填where。
208．
考查非谓语动词。句意：所以，如果你有睡眠问题，可能是时候改变你的生活方式了。该题考查固定句式：It is time to do sth.（到了该做某事的时候了）。it是形式主语，to do是真正的主语。故填to make。
Do you remember a time when you had no worries stopping you from getting a good night's rest?199．(fortunate), your happy childhood is probably a thing of the past.
A recent survey has found that many people suffer200．sleep problems. Some are unable to fall201．(sleep), some wake up in the middle of the night, and others simply do not get enough sleep. One of the reasons why people fail to get a good night's sleep202．(be) pressure from school or work. Noise pollution and light pollution in big203．(city) may also contribute to sleep problems. In the short term, people with sleep problems often feel tired and have trouble204．(concentrate). In the long term, they may be at increased risk of having 205．poor memory, being overweight and suffering a heart attack. Sleep problems are especially dangerous for teenagers. They are still growing, and night is the time when206．(they) bodies grow faster. Teenagers who do not get enough sleep may experience situations207．body development slows down, and their health suffers.
So, if you have a sleep problem, it might be time208． (make) some changes in your lifestyle.
199．Unfortunately
200．from
201．asleep
202．is
203．cities
204．concentrating
205．a
206．their
207．where
208．to make
【分析】
这是一篇说明文。文章分析了导致人们睡眠问题的原因和睡眠不好可能引发的问题。
199．
考查副词。句意：不幸的是，你快乐的童年可能已经成为过去了。“快乐的童年成为过去”是一件不幸的事情，且该空修饰整个句子，应该用副词。故填Unfortunately。
200．
考查介词。句意：最近的一个调查发现很多人都患有睡眠问题。suffer常和from搭配，表示“患有……疾病，遭受……之苦”。故填from。
201．
考查形容词。句意：一些人不能够入睡。fall asleep是固定短语，意为“入睡”。其中，asleep是形容词，作表语。故填asleep。
202．
考查时态和主谓一致。句意：人们不能睡个好觉的原因之一是来自学校或工作的压力。该句是对人们不能睡个好觉的客观分析，应用一般现在时态。且主语是one，根据主谓一致原则，谓语动词用第三人称单数形式。故填is。
203．
考查名词。句意：大城市的噪音污染和光污染也可能导致睡眠问题。city是可数名词，大城市不止一个，前面无冠词，应用名词复数形式。故填cities。
204．
考查动名词。句意：在短期内，有睡眠问题的人通常会感到疲劳，难以集中注意力。have trouble (in) doing sth.是固定句式，意为“做某事困难”，in后面接动名词作宾语，故填concentrating。
205．
考查冠词。句意：从长远来看，他们记忆力差、超重和患心脏病的风险可能会增加。memory是可数名词，常和不定冠词a连用。a good memory意为“好的记忆力”。故填a。
206．
考查代词。句意：他们还在生长，而夜晚是他们的身体生长得更快的时候。该空修饰bodies，应用形容词性物主代词，表示“他们的”，故填their。
207．
考查定语从句。句意：睡眠不足的青少年可能会经历身体发育迟缓和健康受损的情况。________ body development slows down, and their health suffers是定语从句，修饰situations，关系词在从句中作抽象地点状语，应用关系副词where引导该从句。故填where。
208．
考查非谓语动词。句意：所以，如果你有睡眠问题，可能是时候改变你的生活方式了。该题考查固定句式：It is time to do sth.（到了该做某事的时候了）。it是形式主语，to do是真正的主语。故填to make。
