Why did the captain ask the passengers to keep their seat belt on？
A. Because the plane is going to take off.
Because the plane is going to land.
C. Because there was an unexpected rough air flow.
D. Because the passengers were in great disorder.
查看答案
Blain is usually late.
A. True
B. False
The reason why so many Americans die in fires is that______.
A. they took no interest in new technology
B. they did not attach great importance to preventing fires
C. they showed indifference to fighting fires
D. they did not spend enough money on fire facilities
It can be inferred from the passage that______.
A. fire safety lessons should be aimed at American adults
B. American children have not received enough education of fire safety lessons
C. Japan is better equipped with fire facilities than the Untied States
D. America's large population accounts for high fire frequency
The day domestic robots come into being is______.
A. coming very soon
B. definite
C. impossible
D. uncertain
微信支付 
支付宝支付