问题 填空题

夏季生活在绿草中的青蛙是草绿色,而秋季生活在枯草中的青蛙却是土黄色,这说明生物能______.山羊吃草时会连根拔起,时间久了会造成土地沙漠化,这说明生物能______.

答案

生物必须适应环境才能生存,如夏季生活在绿草中的青蛙是草绿色,而秋季生活在枯草中的青蛙却是土黄色,是一种保护色,不易被敌害发现,这说明生物能适应环境;但是山羊吃草时会连根拔起,时间久了会造成土地沙漠化,表明生物能影响和改变环境.

故答案为:适应环境;影响环境.

阅读理解

If you want to keep fit, please refer to the following:

Move More

Make it a daily to find ways to move your body.  小题1:Climb stairs instead of taking the elevator(电梯). Walk your dog; play with your kids. It doesn’t have to be an hour in the gym or a 45-minute dance class. But that’s great when you’re up to it. At the same time, move more.

Give up Smoking

Ever since 1960 when it was announced that smoking was harmful to health, Americans have been reducing their use of tobacco products. Just recently, we’ve seen more and more teens smoking. Could it be the Hollywood influence?  小题2:  Take care! Warn your children against smoking.

 小题3:  

While recent studies show a glass of wine or one drink a day can help protect against heart disease, more than that can cause other health problems such as liver and kidney(肝肾) disease and cancer.

Reduce Stress(压力)

Easier said than done, stress comes in many ways.  小题4:  Spend 30 minutes a day doing something you like such as walk on the beach or in a park, read a good book, visit a friend, listen to relaxing music, and watch a funny movie.

Protect Yourself from Pollution

If you can’t live in a smog-free environment, at least avoid smoke-filled rooms. 小题5:  Exercise indoors in air conditioning when air quality is good.

A.Avoid Excessive(过量的) Drinking

B.There are many things you can do to move your arms and legs.

C.Think carefully about what you will do.

D.Exercise outside when the smog rating is low.E. It seems that the stars in every movie smoke cigarettes.

F. Keep a Positive Mental Outlook

G. Some techniques given by experts are to think positive thoughts.

单项选择题