下列不是哺乳动物特征的是（    ）

要求：1)．语言流畅，书写规范、卷面整洁，词数不少于60个；

2)．文中不得使用真实姓名、校名，否则以零分计；

3)．将短文写在答题卡上。写在本试题卷上无效。

    Here are some tips about how to keep healthy.

1) Healthy food is important. If you want to keep healthy, eat lots of fruit and vegetables. Don't eat much meat.

2) Water is important. Drink water every day. Milk is good for you, too. Don't drink sweet drinks.

3) Exercise is important. You can ride your bike or play soccer. Going swimming is a good idea.

4) Clean air is important. If you are free, you can go to the park and enjoy clean air.

5) Your teeth are important. You should brush your teeth twice a day.

6) Sleep is important, too. Go to bed early. Don't stay up late, or you will feel sleepy.

2015 年 3 月 9 日，宝洁公司因佳洁士双效炫白牙膏“只需一天，牙齿就真的白了”的虚假广告，被上海市工商局处罚 603 万元。该公司的做法侵犯了消费者的。（）

在新疆大漠有“早穿皮袄午穿纱”的说法，造成这一现象的主要原因是（　　）

①白天大气的反射作用强　

②夜间大气逆辐射强　

③白天大气的削弱作用弱　

④夜晚大气的保温作用弱

⑤白天大气的吸收强．