题目内容
The survey shows that ______ we are enjoying less and less good sleep, rates of heart diseases have risen rapidly.
A. while B. although C. if only D. as though
A
【解析】句意:调查显示当我们正在享受着越来越少的好睡眠时,心脏病的发病率却迅速地上升。A. while当…的时候;和…同时;B. although尽管,虽然;C. if only 只要,要是……多好;D. as though仿佛,好像;由句意可知选A。
考点: 考查连词和代词的用法。
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