问题 单项选择题

在锋面附近,温度场特征是()。

A.水平温度梯度大、垂直温度梯度小

B.水平和垂直温度梯度均小

C.水平温度梯度小、垂直温度梯度大

D.水平和垂直温度梯度均大

答案

参考答案:A

阅读理解

阅读理解

     In the US, people prefer waiting for a table to sitting with people they don't know. If you are sitting

at a table with people you don't know, it is impolite to light up a cigarette without first asking if it will

disturb them.

     At American restaurants and coffee shops you are usually served tap water before you order. You

may find the bread and butter is free, and if you order coffee, you may get a free refill.

     Most cities and towns have no rules about opening and closing times for stores or restaurants,

though they usually do make rules for bars. Especially in large cities, stores may be open 24 hours a day.

     Servings in restaurants are often large, too large for many people. If you can't finish your meal but

would like to enjoy the food later, ask your waitress or waiter for a "doggie bag". It may have a picture

of a dog on it, but everybody knows you're taking the food for yourself. Supper and dinner are both

words for the evening meal. Some people have "Sunday dinner". This is an especially big noon meal.

     Tips are not usually added to the check. They are not included in the price of the meal, either. A tip

of about 15% is expected and you should leave it on the table when you leave. In some restaurants,

a check is brought on a plate and you put your money there. Then the waiter or waitress brings you

your change.

1.Which statement is TRUE?

A. American people like sitting with people they don't know.

B. Americans prefer smoking to tap water at the restaurants.

C. Bread and butter and coffee are free at American restaurants.

D. American people usually will not smoke unless they ask for permission.

2.What are the opening and closing times for stores and restaurants in the US?  

A. There are no rules for stores and restaurants.    

B. You can enter a bar at any time in the US.    

C. Stores may be o pen around the clock in large cities.    

D. Restaurants may be open 24 hours a day in every city.

3.What do American people always do when servings are too large for them?

A. They leave the food on the table and go away.

B. They ask the waitress or waiter to keep the food.

C. They take the food home with a "doggie bag" for their dogs.

D. They take the food home with a "doggie bag" and enjoy the food later.

4.What can you learn about "tips" according to the passage?

A. Customers often add tips to their check.   

B. Tips are left on the table when customers leave. 

C. People are not expected to pay tips in addition.      

D. The price of the meal usually includes the tip.

名词解释