问题 填空题

如图所示为一大型压路机,其主要作用是用前面的大铁圆筒把疏松的路面压紧,它是利用_______________的方法增大对地面的压强来实现的。

答案

增大压力

题目分析:大型压路机由于车身质量和前面的大铁轮质量都很大,所以可以产生很大的压力,从而在受力面积差不多的情况下,增大压强。

点评:本题考查了增大压强的方法,应熟练掌握增大压强的方法有:增大压力或减小受力面积。

填空题
阅读理解

The French have special meal etiquette(礼仪). If you plan to go on holiday in France, why not read the following tips? They can make you feel good when you visit a French restaurant or are invited to a French house.

Breakfast in France

French meals are quite similar to those in the rest of the western world. The breakfast is lighter than elsewhere. Milky coffee or hot chocolate are also classics. Contrarily (相反地) to what happens in British(英国的) families.

Lunch in France

Lunch was traditionally(传统地) the main meal of the day in France, this is why the French still usually take more than one hour to have lunch. In big cities, lunch looks more like those in the UK or in the USA, being a sandwich or fast-food meal.

Dinner in France

In France, the dinner has become the main meal of the day over the last couple of years, as the lunch is now often made of a simple sandwich or salad.

The French dinner is made up with the starter, main dish, cheese often with salad or fruit, dessert and coffee.

小题1:Breakfast is not very important in ____________.

A. France       B. the UK       C. the USA     

小题2:Traditionally, __________ was the main meal of the day in France.

A. breakfast    B. lunch            C. dinner          

小题3:Why has the dinner become the main meal of the day now?

A. Because the French want to have more food.

B. Because the French have enough time at noon.

C. Because the lunch is often simple.

小题4:Which is NOT true according to the passage?

A. French meals are similar to the rest of the western world.

B. Breakfast is more important in the UK than in France.

C. People eat fast-food meals in big cities in France.

小题5:What is the main idea of the passage?

A. How to make three meals

B. Three meals in France

C. Different kinds of food in France