【单选题】
{{B}}Directions: {{/B}}There are 20 blanks in the following passage, and for each blank there are 4 choices markedA,B,C、andD、at the end of the passage. You should choose ONE、an-swer that best fit into the passage. Then blacken the corresponding letter on theAnswer Sheet. 
| Enough sleep is important to health. The amount of sleep{{U}}  (56)  {{/U}}depends on the age of the person and the conditions in which sleep{{U}}  (57)  {{/U}}. The young may need more sleep than the old, but{{U}}  (58)  {{/U}}eight hours are enough for the{{U}}  (59)  {{/U}}of grown-ups. Some can{{U}}  (60)  {{/U}}with less than this amount but{{U}}  (61)  {{/U}}may need more.Every person knows his own{{U}}  (62)  {{/U}}It is then a matter of how to{{U}}  (63)  {{/U}}it. Sleep should always be{{U}}  (64)  {{/U}}to make one relaxed and ready for{{U}}  (65)  {{/U}}work. Fresh air is{{U}} (66) {{/U}}to sound sleep. It is not{{U}} (67) {{/U}}reason for some people to{{U}} (68) {{/U}}that it is practical to sleep in the open air.{{U}} (69) {{/U}}a person can keep himself warm,{{U}} (70) {{/U}}sleeping probably gives the body{{U}} (71) {{/U}}complete relaxation. Ability to sleep is largely a{{U}} (72) {{/U}}. Out-of-door{{U}} (73) {{/U}}, a good habit of regular{{U}} (74) {{/U}}, the avoidance(避免)of late eating, and{{U}} (75) {{/U}}are all helpful to sound sleep.  | 
B.enough
C.short
D.long
网考网参考答案:A
网考网解析:
这里的need是名词,意为“需要”。其他三项都是形容词。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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