The United States and South Korea are carrying out their yearly joint military training. North Korea has reacted to the exercises, as in years past, with missile launches. However, a North Korea sympathizer （同情者）in Seoul also carried out an unexpected attack on the U.S. ambassador to South Korea.

The U.S. and South Korea say the joint training is necessary to show military readiness （预备）and resolve（坚决）. But the exercises also increase tensions and the possibility of conflict on the Korean island.

About 10,000 South Korean troops and 8,000 U.S. troops take part in the land, sea and air operations. The soldiers also use computer simulations (模拟)to practice how to answer possible attacks or invasions from North Korea.

North Korea has protested the training. The country's government says the U.S. and South Korea are planning a possible invasion. North Korea has answered with two missile launches.

Daniel Pinkston is a North Korea expert with the International Crisis Group. He agrees the exercises may increase some tensions in the area. But he says they also keep the peace by showing military strength.

He says North Korea uses force as the tool to solve political disagreement inside and outside the country. So, he says, if the government sees weakness it will explore that weakness. 

Mr. Pinkston says he is most concerned that North Korean operational commanders may incorrectly understand the purpose of the joint exercises. He says those commanders believe that the United States and South Korea are planning to invade North Korea.

The recent knife attack on the U.S. ambassador did not cause a wider conflict. The ambassador was not seriously hurt and the South Korean attacker is not believed to be connected to North Korea. However, North Korea called the attack a just punishment for the joint military training.

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1.How many reactions are there to the military training by South Korea and the USA?

A Four

B Three

C Two

D Only one

解析：选C。C。细节理解题。每年韩美军演都引来朝鲜的试射导弹反应，这次还发生了刺杀美国大使事件，所以今年是两起反应事件。

2.What is the result of this military training?

A It has brought tensions to this area.

B North Korea has launched missiles.

C It has caused conflict on the Korean island.

D The US ambassador was attacked.

解析：选A。A。推理判断题。军演导致的直接结果就是半岛局势的紧张。而朝鲜试射导弹或刺杀大使是这种紧张的反应。当然这次并没带来直接的冲突。

3.The training operations practice on how to defend attacks from ___.

A no clear aims

B The United States

C South Korea

D North Korea

解析：选D。D。细节理解题。 根据文中practice how to answer possible attacks or invasions from North Korea. 可知，这次军演有专门针对防朝鲜进攻的演习。

4.What is Daniel Pinkston’s opinion about the military training?

A This military training will force North Korea to seek its weakness.

B This military training will show that they are planning a invasion.

C Showing military strength will make North Korea understand their purpose.

D Showing military strength will keep peace there.

解析：选D。D。推理判断题。根据文中Daniel Pinkston认为：they also keep the peace by showing military strength. 可知答案。

5.North Korea thinks that___is a just punishment for the military training.

A The ambassador’s not seriously hurt

B the knife attack on the US ambassador

C solving political disagreement

D the attacker not being connected to North Korea

解析：选B。B。 细节理解题。文章最后一句说，朝鲜认为，此次刺杀美国大使是对韩美军演的惩罚。