单元检测

第Ⅰ卷

第一部分　听力(略)

第二部分　阅读理解(共两节，满分40分)

第一节(共15小题；每小题2分，满分30分)

阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

More than 4 in 10 cancers, 600,000 in the UK alone，could be prevented if people led healthier lives, say experts.The population of the UK is about 63,000,000.

Latest researches from Cancer Research UK show smoking is the biggest avoidable risk factor(因素), followed by unhealthy diets.The charity advises people to live healthily, limit alcohol intake(酒精摄入) and do regular exercise.

According to the research from 2007 to 2011, more than 300,000 cases of cancer recorded were linked to smoking.A further 145,000 were linked to unhealthy diets containing too much processed(加工的) food.Obesity(肥胖) contributed to 88,000 cases and alcohol to 62,200.Sun damage to the skin and physical inactivity were also contributing factors.

Professor Max Parkin, a Cancer researcher, says, "There's now little doubt that certain lifestyle choices can have a big influence on cancer risk, with research around the world all pointing to the same key risk factors.

"Of course everyone wants to enjoy some extra treats during the Christmas holiday so we don't have to stop eating beef pies and drinking wine but it's a good time to think about taking up some healthy habits.

"Leading a healthy lifestyle can't promise that someone won't get cancer but we can stack the odds in our favor by taking positive steps."

Public Health England says a healthy lifestyle can play an important role in reducing cancer risk.It says campaigns such as Smokefree, Dry January and Change4Life Sugar Swaps all aim to raise public awareness.It's important that we continue to make progress in noticing cancer earlier and improving treatments, but helping people understand how they can reduce their risk of developing cancer in the first place remains important in dealing with cancer.

21．Which of the following is the second biggest avoidable cancer factor?

A．Obesity. B．Alcohol intake.

C．Unhealthy diets. D．Physical inactivity.

答案　C