完形填空

先通读下面的短文，掌握其大意，然后在每小题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

Few people like changing their habits, good or bad. Whether it is smoking, drinking or over-eating, they 1“enjoying”them to the end.

On every packet of cigarettes(香烟), people are warned against the2of smoking: “Warning: Cigarette Smoking Is Dangerous to Your Health”.3, millions of them start smoking or go on smoking. Why?

Facts show that families and surroundings(环境) play a very important part in 4 smokers. All those smokers come from smoking families or have smoking5 or relatives. Films and TV plays also play a part. People6their “heroes" on TV drinking alcohol(酒) or smoking cigarettes. “Heroes” seem to fear7, neither killing themselves nor killing others with alcohol and cigarettes. If they are not afraid of the harm of smoking and drinking,8should common people be afraid?

The simple warning on the cigarette packet does not influence smokers' habits. Even 9warnings, like showing pictures of smokers who have died of cancer, don't seem to work.  

Knowing and believing seem to be two10 things. If smoking is really as harmful as doctors say, it is time for smokers to think about it and try to give it up!

根据短文理解，选择正确答案。

    There are fifty students in our class. There are twenty-four boys and twenty-six girls. Some students live near the school, and some others live far from school. About half of the students usually come to school by bike. They often get to school at a quarter to seven. About fifteen students often come to school by bus. They often get to school very early, too. Another ten students come to school on foot. Their homes are near the school, but they are often late for school, because they get up late.

课内阅读。

    在那块透明的琥珀里面，两个小东西还是好好地躺着。我们可以看见苍蝇的翅膀和蜘蛛的长腿，可以看见它们当时在黏稠的松脂里怎样挣扎，因为它们的腿的四周显出好几圈黑色的圆环。从那块琥珀，我们可以推测发生在一万年以前的故事的详细情形，并且可以知道，在远古时代，世界上早已有那样的苍蝇和蜘蛛了。

一个完整的反射弧包括五部分：感受器、____、____、____、____．

“一名4岁男童身患白血病，父母变卖房产依然无力承担高额治疗费用”，2015年12月16日这一消息在微信朋友圈传出后，南京众多网友迅速转发并伸出援手。22小时共捐出180万元，平均每小时筹款76818元!每分钟1280元!每秒钟21元!全国惊呼：“南京是一座不缺爱的城市!”网友们的爱心捐赠行为直接反映出（  ）

①生命需要相互关爱           ②人类的生命最具智慧      ③我们应该永不放弃生的希望     ④世界因生命而精彩