These teenagers don’t know much of the world yet; that’s why they are so easily .
A. taken in
B. taken up
C. taken on
D. taken off
网友回答
(答案→)A. taken in
B. taken up
C. taken on
D. taken off
解析：句意：这些少年依然对这个世界知道的不多，这也是为什么他们很容易就上套。take in 欺骗、吸收；take up占据；take on承担；take off起飞。故选A。
考点: 考查动词短语的用法。