为什么在出口业务中不宜轻易按远期D/P方式成交？

阅读理解。

     My hometown is Tianjin.  It is one of the biggest cities in China. It is next to Beijing-the capital of

China. So people say, Tianjin is the eastern gate of Beijing. Bohai Bay is in the southeast of Tianjin.  It is

famous for the Haihe River which runs through the city.  There are eighteen districts (区)  in Tianjin.

Heping District is the center. It's the busiest district in Tianjin. Binhai New District is in Tanggu. There are many big foreign companies there.  It is a beautful district.  Jixian is in the north of Tianjin.  It is famous

for the Great Wall. Thousands of people visit it on holidays. Farmers there are very kind and friendly.

You can buy some fruit and nuts (坚果) there. They are very fresh.

     Welcome to Tianjin ! Welcome to my hometown !

1. The writer was born in ________.

A. Beijing          

B. Bohai Bay

C. Tianjin          

D. Nanjing

2. Tianjin is on the ________of Beijing.

A. south        

B. east

C. northwest    

D. southeast

3.  ________ is the busiest one in Tianjin.

A. Heping District    

B. Binhai New District

C. Jixian District      

D. Bohai Bay

4. The ________ runs through the city.

A. Bohai          

B. Tongding River

C. Haihe River      

D. Changjiang River

5. Jixian is famous for ________.

A. the Great Wall      

B. the Bohai Bay

C. Haihe River        

D. the foreign companies

已知集合B={-3，3，5}，f：x→2x-1是集合A到集合B的一一映射，则集合A=______．

围绝经期的常见症状是（）

A.抑郁、精神紧张、心慌、失眠

B.泌尿生殖器萎缩

C.贫血

D.血管舒缩失调：潮红、潮热、出汗

E.月经不规律

通常，意外伤害保险的保障项目主要有( )。

A．死亡给付和医疗给付

B．伤残给付和医疗给付

C．死亡给付和伤残给付

D．损失给付和医疗给付

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