黄鼬在遇到敌害追击时会释放一种“臭气”，利用这种气体将敌害 “击退”或“击晕”。

More and more people like bicycling and it is no surprise. It is fun, healthy and good for the environment. Maybe that’s why there are 1.4 billion bicycles and only 400 million cars on roads worldwide today. Bikes can take you almost anywhere, and there is no oil cost!

Get on a bicycle and ride around your neighbourhooD. You may discover something new all around you. Stopping and getting off a bike is easier than stopping and getting out of your car. You can bike to work and benefit (受益) from the enjoyable exercise without polluting the environment. You don’t even have to ride all the way.

Folding (折叠) bikes work well for people who ride the train. Just fold the bike and take it with you. You can do the same on an airplane. A folding bike can be packed in a suitcase. You can also take a common bike with you when you fly. But be sure to look for information by getting on airline websites. Not all airlines are bicycle-friendly to travelers.

Health Benefits of Bicycling.

·It helps to prevent heart diseases.

·Bicycling helps to control your weight.

·A 15-minute bike ride to and from work three times a week burns off five kilos of fat in a year.

·Bicycling can improve your mood (心情).

·Exercise like bicycling has been shown to make people feel better, more relaxed and self-confident.

·Bicycling is healthier than driving.

If you travel with a folding bike, you can fold it and （）.

A. get out of the car

B. take it onto a train

C. put it in your purse

D. go on airline websites

中、晚期食道癌分型中同时向腔内外侵犯的病理类型是（）

A.蕈伞型

B.溃疡型

C.髓质型

D.缩窄型

E.溃疡型＋髓质型

甲公司与乙公司订立了一份建材买卖合同，乙按约定向甲支付了定金4万元，合同约定如任何一方不履行合同应向对方支付违约金6万元。交货日期届满，甲无法交付该建材。乙诉至法院提出的如下诉讼请求中，即能最大限度保护自己的利益，又能获得支持的是（）。

A.请求甲双倍返还定金8万元

B.请求甲支付违约金6万元，同时请求甲返还支付的定金4万元

C.请求甲双倍返还定金8万元，同时请求甲支付违约金6万元

D.请求甲支付委员金6万元

蠕形住肠线虫的感染阶段为（）

A.感染期卵

B.蛲虫幼虫

C.杆状蚴

D.丝状蚴

E.微丝蚴