售楼处的家具、装饰品等应选择有利于激发客户购买欲的品种，并可适当地配置背景音乐烘托气

先化简，再求值：已知a=2，b=-1，求代数式a²b²+3ab-7a²b²-2ab+1+5a²b²的值．

第二节：完形填空（共20小题；每小题1.5分，满分30分） 阅读下面短文，掌握其大意，然后从各题所给的A、B、C、D四个选项中，选出最佳选项。

This was the morning, when Jeremy, l4 years old, was to begin his duck shooting. He had   31  the whole idea ever since his father had bought him  32  and had promised him a __33__to this island. But he loved his father and wanted to  34  him.

They came to the beach. To ease the sense of fear, he took a  35   of his father, then he put the camera aside and picked up the gun. His father said happily, “I’ve been  36  a long time for this day. I’ll let you  37 .” He leaned (屈身) forward, eyes narrowed. “There is a small flight(一群) now. Keep your head down; I’ll give you the  38  .”

Jeremy’s heart was beating  39  . “No, don’t let them come, please!” But they came, closer, closer... “Now, take them!” cried his father. Jeremy felt his body  40  . He stood up, leaned into the gun the  41  his father taught him. In the same distance, the ducks saw the gunners and flared (突然飞去) wildly. For a second he hung there balanced between life and death. There was no sound. Jeremy stood  42  , seizing the gun.

“What happened?  43   didn’t you shoot?” his father said in a controlled voice. The boy didn’t answer. His lips were trembling.

“Because they were so  44  ,” he said and burst into tears. He sat down, face buried in his hands and wept. All  45  of pleasing his father was gone. He had his chance and he failed  .

For a moment his father was  46  . And then he said, “Let’s try again.” Jeremy didn’t lower his hands. “It’s no use, I can’t.”

“Hurry, you’ll miss them. Here!” Gold metal touched Jeremy. He  47  up, unbelieving . His father was handing the camera to him, and said softly, “Quick!,” Jeremy stood up and pressed his shutter release(快门) button in a flash. “I got them!” His face was bright.

Jeremy saw that there was no disappointment in his father’s eyes,  48  pride and love. “I’ll always love shooting. But that doesn’t mean you  49  . Sometimes it takes as much   50  not to do a thing as to do it.”  He paused. “I think you could teach me how to operate that camera .”

31. A. hated                   B. loved                C. hoped                  D. known

32. A. toy                     B. a camera             C. a bike                  D. a gun

33.A. game             B. prize                 C. trip                   D. holiday

34. A. join              B. praise                C. help                   D. please

35. A. rest              B. breath                C. picture                D. care

36. A. lasting                  B. waiting              C. looking               D. asking

37. A. go               B. shoot                C. catch                 D. play

38. A. word             B. gun                  C. chance                D. fact

39. A. wildly            B. widely               C. tightly                D. nervously

40. A. warm             B. excite                C. delay                 D. obey

41. A. rule              B. road                 C. way                  D. path

42. A. surprisedly       B. quietly               C. still                   D. hard

43. A. How              B. Where               C. Why                 D. What

44. A. lovely             B. sad                  C. frightening            D. friendly

45. A. hope             B. means                C. decision               D. practice

46. A. silent                   B. cheerful              C. calm                  D. worried

47. A. sat               B. looked                     C. stood                  D. put

48. A. almost            B. mostly                     C. even                  D. only

49. A. need              B. might                C. dare to                D. have to

50. A. energy            B. work                C. courage               D. mind

在使用弹簧管压力表测氧气压力时，则严禁沾有（），以确保安全生产。

A、水

B、盐

C、电解液

D、油脂

我国863计划从世界高技术发展趋势和我国国情出发，选择（）等八个高技术领域为重点。

A.信息技术

B.生物技术

C.航天技术

D.激光技术

简单应力条件下岩石的强度是指岩石在单一的外载作用下的强度，包括（）、（）、（）和（）。