In refuting the alarmists, the author advances his argument by first challenging ________.
A. the source and amount of their data
B. the targets of their observation
C. their system of measurement
D. their definition of violence
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Why did the writer finally decide to buy three skirts？
A. The skirts were cheap and pretty.
B. She liked the patterns on the skirts.
C. She wanted to do something as compensation.
D. She was fed up with further bargainning with the woman.
Priceton professor Freeman Syson thinks that____.
A. scientists will find alien life similar to ours
B. humans will be able to settle on Mars
C. alien life will likely be discovered
D. life will start to evolve on Mars
Thousands of _______at the stadium came to their feet to pay tribute to an outstanding
A. audience B.participants C.spectators D.observers
Why do parents urge their children to apply to more school than ever？
A. they want to increase their children chances of entering a prestigious college.
B. they hope their children can enter a university that offers attractive scholarships.
C. Their children will have have a wider choice of which college to go to.
D. Elite universities now enroll fewer student than they used to.
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