双发喷气式飞机在巡航过程中单发失效，必须飞越较高的地形区，为了保证最高的超障高度，适

荔枝不能在北方种植的主要原因是

A．北方温度较低

B．北方降雨量少

C．北方光照不足

D．北方土壤贫瘠

阅读理解。

     Lunar New Year has long been the most important cultural celebration on the Chinese calendar. And

even for those who scoff (嘲笑) at superstition (迷信), Chinese New Year customs can  bring a welcome sense of renewal to a seemingly endless winter.

1. Clean Your House

     The Chinese make sure to sweep every corner of a room to rid their homes ghosts and bad luck

associated with the old year. If negative spirits don't hide in your living room, chances are a layer of dust

and grime (污垢) from dry heat and slushy (有泥有雪的) boots does. Get a jump on your spring

cleaning while the weather outside's still frightful enough to keep you stuck indoors

2. Get a Mini Makeover

     In China, it's customary to get a haircut and new clothes for the new year. The idea is that with a new

look, bad spirits won't recognize a person and follow them into the new year.

3. Make Apologies

     Carrying grudges (怨恨) into the new year is a no-go according to Chinese tradition, so differences

with family, friends, and associates must be settled before New Year's Eve. If your shoulders are

sagging(向下凹,下陷) from the weight of a grudge or two, take the initiative to resolve them.

4. Pay Off Your Debts

     Like grudges, old debts are a bad omen (预兆) for a new year. No matter which calendar you follow,

there's no time like the present to settle any outstanding accounts and repay loans from friends and

relatives.

5. Spend Time With Your Family

     In China, offices and stores close down for Chinese New Year and people spend days travelling to

their hometowns to reconnect with family, feast, and simply enjoy the company of their loved ones.

1. According to the passage, Chinese New Year customs          .

A. are foolish acts associated with superstition      

B. bring happiness to Chinese people

C. imply the ending of the winter                

D. are neglected by many people

2. Traditionally, the purpose of cleaning the house is to          .

A. get rid of evils and misfortune                

B. find out the bad spirits in the rooms

C. clean up all the dust and grime                

D. keep away the bad weather

3. Customarily, what may happen if you began a new year without a new look? 

A. Your friends will not recognize you.            

B. You will be looked down upon.

C. You will be seen as lack of good luck.          

D. You will be followed by a bad guy.

4. According to the passage, which of the following is also Chinese tradition?

A. Exchanging gifts.    

B. Have family union.    

C. Share debts.    

D. Set goals.

柜面通的存款撤销交易需（）级柜员授权办理。

A.A

B.B

C.C

D.D

心源性呼吸困难病人卧床休息时，根据病情其卧位可取（）、（）和（），以增加（），减少（）、减轻（）。

每年工作时间不足（）的内燃叉车，每年进行一次一级保养。

A.150小时

B.15小时

C.10小时

D.300小时