交通7
A、They were collected from the four major US airlines.
B、They were collected from the 13 largest US airlines.
C、They were collected from all the airlines in the US.
D、They were collected from regional airlines.
A、They were collected from the four major US airlines.
B、They were collected from the 13 largest US airlines.
C、They were collected from all the airlines in the US.
D、They were collected from regional airlines.
A、Many people died in a terrorist attack.
B、Many people died in a conflict among pilgrims.
C、Many people died in the crush of the annual hajj pilgrimage.
D、Many people died in the conflict between Saudi Arabia and Iran.
A、Failing to provide adequate security.
B、Failing to provide clear instructions.
C、Failing to obey instructions.
D、Failing to make responses.
A、Because the system does not function well.
B、Because to install the system is difficult and expensive.
C、Because the system is newly invented and hasn't been put into use.
D、Because the US Congress has doubt about the necessity of the system.
A、One hundred and four people have been found dead in the explosions.
B、Thirty-one firefighters lost their lives in the explosions.
C、The explosions took place in the city center.
D、The explosions took place in the afternoon.
A、Another explosion.
B、The air and water quality.
C、The evacuation of local people.
D、A possible poisonous chemical spread.
A、Because a new ire broke out in the area.
B、Because previous operations were unsuccessful.
C、Because heavy rains made operations impossible.
D、Because all the trapped victims had been rescued.
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