题目内容：
Directions : In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.Question'sare based on the following passage.
During sleep, the fatigue of the body disappears and recuperation (恢复) begins. The tired mind gathers new energy. Once awake, the memory, improves, and annoyance and problems are seen in a better 1 .
Some adults require little sleep; others need eight to ten hours in every twenty-four. Infants sleep sixteen to eighteen hours daily and, as they grow older, the amount gradually diminishes.Young students may need twelve hours; university students may need ten. A worker with a physically 2 job may also need ten, whereas an 3 .. worker under great pressure may manage on six to eight. Many famous people are reputed to have 4 little sleep.
Whatever your 5 need, you can be sure that by the age of thirty you will have slept for a total of more than twelve years. By that age you will also have developed a sleep. 6 a favorite hour, a favorite bed, a favorite position, and a 7 you need to follow in order to rest 8 .
Investigators have tried to find out how long a person can go without sleep. Several people have reached more than 115 hours, nearly five days, whereas animals kept awake for five to eight days have died of 9 . The 10 for human beings is probably about a week.
A．conveniently F．limit K．comfortably
B．required G．demanding L．exhaustion
C．perspective H．individual M．starvation
D．corresponding I．formula N．prospective
E．routine J．acquired O．executive
and annoyance and problems are seen in a better 1 .
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