Give the correct form of the words in brackets to complete the following passage. SLEEP LESS AND LIVE LONGER

According to a (41. RECENT)………….published study, people who only get

six or seven hours of sleep have longer life (42. EXPECT)………….than those who

sleep eight or more hours. “The idea that we need eight hours of sleep is completely (43. SCIENCE)………….,” said Professor Daniel Kripke, who led the study.

The methods used, however, have been (44. CRITIC) ………….. Investigators

relied on people’s own accounts of how long they slept, which could be rather (45. PRECISE)…………., as no one really knows when they fall asleep. Contrary to

Professor Kripke's findings, most experts believe that getting (46. SUFFICE)………….

sleep is a serious problem. Lack of sleep can be dangerous - for example, the risk of accidents is (47. GREAT)………….affected by a person’s level of alertness.

What all scientists agree on is that more research is needed to discover exactly what the (48. CONNECT)………….is between sleep and longevity. This research is essential because with all the (49. DISTRACT)………….of modern life, such as cable TV and the Internet, it seems that a good night's rest is becoming (50. INCREASE)………….rare.

(Mastermind Use of English)

According to a (41. RECENT)………….published study