GMAT习题练习

GMAT考试易错题(2019/4/24)
1题:某学生在解方程
误将式中的x+1看成x-1,得出的解为x=1.
那么a的值和原方程的解应是().
A.a=1,x=-7
B、a=2,x=5
C、a=2,x=7
D.a=5.x=2
【单选题】:      

2题:
A、standard Veggiematik machine can chop 36 carrots in 4 minutes. How many carrots can 6 standard Veggiematik machines chop in 6 minutes

A、36
B、54
C、108
D、216
E、324
【单选题】:      

3题:For hundreds of years, pearl divers have gathered pearls directly from mollusks on the seafloor. This is an extremely risky profession, exposing the divers to risks of drowning, air embolism, and shark attacks. Still, as long as society demands authentic cultured pearls, these brave divers must continue to risk their lives.
Which of the following statements, if true, most seriously weakens the conclusion above
A、Shark attacks on pearl divers have decreased steadily over the last three decades because of declining shark populations.
B、Cultured pearls are generally considered more beautiful than those made by artificial means.

C、Robotic pearl harvesters can gather pearls faster and at less cost than human divers, although they may disturb aquatic communities.
D、Part of the value of cultured pearls derives from the exotic way in which they are obtaineD、
E、With the proper equipment and training, a diver employing scuba gear can harvest three times as many pearls per hour as can a free air diver.
【单选题】:      

4题:If the area of a square with sides of length 8 centimeters is equal to the area of a rectangle with a width of 4 centimeters, what is the length of the rectangle, in centimeters
A、4
B、8
C、12
D、16
E、18
【单选题】:      

5题:The promoters of the Springfield music festival estimated a 50 percent increase in ticket sales from last year, but because of bad weather, ticket sales actually decreased by 25 percent from last year’s level. What percent of the projected ticket sales were the actual ticket sales
A、45
B、50
C、55
D、65
E、75
【单选题】:      

 

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