According to the text, genetic engineering can be used to ______.
A．kill weeds through cross-breeding
B．make crops hardier
C．improve the yield and quality of most crops
D．make crops resistant to chemical fertilizers

A．probes
B．researches
C．microscopes
D．pursuits

According to Alan, creativity in salespeople ______.
A．is something that can not be trained or taught
B．is something that can be gained through years of experience
C．is the ability to "think outside the box"
D．is the ability to persuade customers effectively and efficiently

People moving within country borders are often motivated by the desire to ______.
A．follow suit
B．live close to relatives
C．integrate themselves into the mainstream society
D．escape persecution

It can be inferred from the passage that ______.
A．instincts most often misguide the monetary policies
B．Greenspan has lost his control of the central bank
C．consensus is often the case among Fed's policymakers
D．Greenspan wouldn't tolerate such a dissent

A．evaluation
B．communication
C．punctuation
D．consideration