[填空题]When may spontaneous panic happen

[填空题]When may spontaneous panic happen

[简答题]Although most dreams apparently happen spontaneously，__________(但外界的事物也会激发人做梦)．

[单项选择]Landslides happen when large amounts of rock, mud and other loose materials are suddenly uprooted and sent sliding down a slope. This might be caused by an earthquake or it might happen after a heavy rain or when soil becomes waterlogged after a fall of snow.
As the material loses its grip and begins to move down the slope it gathers speed and sweeps up more material with devastating results. Nepal suffers from frequent landslides because the hillsides have been stripped of trees. When it rains the water soaks into the soil and this slides down the mountainside.
The worst landslide in Wales’ history came about with the collapse of an artificial mountain on 21 October 1966.
A 250-metre high mountain of waste material from the local coal mine had been piled up outside the village of Aberfan. Two million tons of rock, coal and mud began to move with a thunderous roar towards’the local school, uprooting trees and crushing houses. It was the start of the school day and
A. When large amounts of rock, mud and other loose materials are suddenly uprooted and sent sliding down a slope.
B. This might be caused by an earthquake or it might happen after a heavy rain or when soil becomes waterlogged after a fall of snow.
C. This might be caused by forest fire.
D. The hillsides have been stripped of trees which are rooted on them.

[填空题]What will happen when people drive faster than speed limit
The policeman can stop them and gives them ______.

[单项选择]What will your blood pressure happen when you have arm exercise
A. Slow down.
B. Rise.
C. Keep normal.

[单项选择]
What would happen when Johnny was late for the school bus [A] He would quickly run to school. [B] He would stay away from school for the day. [C] He would take a public bus to school.

[单项选择]What will happen when there is more solar wind activity
A. Less carbon-14 is produced.
B. More carbon-14 is produced.
C. None carbon-14 is produced.
D. Nothing will happen.

[单项选择]Strange things happen to time when you travel, because the earth is divided into twenty-four time zones, one hour apart. You can have days with more or fewer than twenty-four hours, and weeks with more or fewer than seven days.
If you make a five-day trip across the Atlantic Ocean, your ship enters a different time zone every day, As you enter each zone, the time changes one hour. Traveling west, you set clock back; traveling east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours.
If you travel by ship across the Pacific, you cross the International Date Line. By agreement, this is the point where a new day begins. When you cross the line, you change your calendar one full day, backward or forward. Traveling east, today becomes yesterday; traveling west, it is tomorrow.
The International Date Line is the name for ______.
A. the beginning of any new time zone
B. any point where time changes by one hour
C. the point where a new day starts
D. any time zone in the Pacific Ocean