5 Read the text. Choose the correct answer, A, B, C or D. New research suggests that having a smartphone on your desk when you are studying tends ¹ a negative effect on your ability to concentrate. It ² that in IQ tests where candidates had a smartphone nearby, even when they did not actively use it, they ³ less well than those without. It is thought that we have become accustomed to being alert to updates and notifications on our mobile devices. Thus, just having a smartphone in sight may be enough to ⁴ our attention from the task at hand. 1 A to having C have had 2 A has been shown C is shown 3 A made C performed 4 A put off C omit

1. New research suggests that having a smartphone on your desk when you are studying tends to have a negative effect on your ability to concentrate. It was showing that in IQ tests where candidates had a smartphone nearby, even when they did not actively use it, they got on less well than those without. It is thought that we have become accustomed to being alert to updates and notifications on our mobile devices. Thus, just having a smartphone in sight may be enough to distract our attention from the task at hand.

Ответ: B, B, B, B