题目内容
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Traveling has now become a highly organized business ______.
A．so we can travel anywhere without difficulty
B．because we are provided with all kinds of convenient means for traveling
C．because traveling organizations can be found in the countries the world over
D．so travelers have increased rapidly
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更多“Traveling has now become a hig…”相关的问题
The modern people like traveling now because______.
A. it can bring us more knowledge
B. it can make us rich
C. they have too much money
D. it is a good idea
The heated air above a fire rises in a pillar of smoke and burnt gases, pulling fresh air in from the sides to replace it. Firefighters use this fact when they "fight fire with fire." They start a fire well in front of the one which they are fighting. Instead of traveling on in front of the huge fire, the smaller fire is pulled back toward it by the updrafts of the larger blaze. As it travels back to meet the large fire, the smaller backfire burns away the fuel that the forest fire needs to survive.
Even when a backfire has been well set, however, the fire may still win the struggle. The wind which the firefighters used to help them may now become their enemy. When the backfire meets the main fire, before both die for lack of fuel, there is tremendous flame, great heat and wild winds. A strong gust may blow the fire into the treetops beyond the area, giving the fire new fuel and a new life.
This passage focuses on ______.
A．how fires start
B．damage caused by fire
C．the fascination of fire
D．fighting forest fires
______ was once regarded as impossible has now become a reality.
A．That
B．Which
C．Who
D．What
Up until now, Queen Elizabeth has ruled in Britain for over __________ decades.
A.three
B.four
C.five
D.six
The illness from which Mary is suffering has now been ______ as hepatitis(肝火).
A．diagnosed
B．determined
C．deduced
D．discovered
_16_ has now been written down
A.Some of it
B.Some of them
C.All of it
D.Many of them
A.resume
B.continue
C.discontinue
D.suspend
He has (less friends) (in) his classes now (than) he (had) last year.
A．less friends
B．in
C．than
D．had
