单项选择题

The main idea of the text is_____.

A．the Dromaeosanr's skeleton was found
B．fossil dinosaur reveals body covered in feathers
C．modern birds evolved from dinosaurs
D．a recent new invention

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单项选择题What was the most important reason for the U. S. government to stop the Vietnam War and withdraw the troops

A．The economy.
B．The expenses.
C．The lasting time was too long.
D．The antiwar movements both inside and outside the country.

单项选择题From the text we can deduce that modern birds evolved from dinosaurs _____.

A．is approaching solution
B．remains a debate
C．is apparent
D．is impending

单项选择题According to the passage, what was the role of the organization The Resistance

A．It was an organization that opposed to pass the law of Vietnam War or even when passed, it appealed to its members to refuse to serve in the war.
B．It was an organization that called on the students to oppose the war and refuse the war.
C．It was an organization that persuaded the students members not to register to serve in the army or even when registered not to serve in it.
D．It was an organization which denounced the war as racist as early as 1963.

单项选择题The main role of some dinosaurs' developed primitive feathers is to_____.

A．fly
B．fight
C．keep warm
D．frighten the enemy