单项选择题


Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now listen to the conversation.
How many provinces and territories does Canada have

A．Two provinces and ten territories.
B．Six territories and six provinces.
C．Ten provinces and two territories.
D．Eight provinces and two territories.
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单项选择题
What is not true about the patient mentioned in the beginning
A．He came in for a routine physical checkup.
B．He is going on vacation with his family.
C．He feels in perfect health.
D．He is only 36 years old.
问答题
[听力原文]Aircraft Carriers are a powerful and extremely flexible part of a nation’s defense. A carrier is flexible in a way that armies and air forces are not because it can influence events merely by being seen. The power of an aircraft carrier can act as a visible deterrent to enemy aggression. A carrier is also flexible because it operates on the ocean. Unlike a land air base, no other country has to be consulted about where a carrier can go and what it can be used for because most of the ocean is considered international water and not part of any one country. This freedom allows carriers to move from one trouble spot to another quite easily. Carriers operate with a number of support and supply ships; this group of ships is referred to as a carrier battle group. While carriers are important, they are also quite expensive, so there are only a few patrolling the world’s oceans today. Approximately 40 carriers of all types are currently in use or being built.
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