下列模板中,适宜用于混凝土冬期施工的是()。 A.组合钢模板 B.木模板 C.滑升模

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问题:

下列模板中,适宜用于混凝土冬期施工的是()。

A.组合钢模板

B.木模板

C.滑升模板

D.爬升模板

考点:房地产估价师建筑工程知识建筑工程知识题库
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已知关于x的方程(k-1)x2-6x+9=0

(1)若方程有实数根,求k的取值范围;

(2)若方程有两个不相等的实数根,求k的取值范围;

(3)若方程有两个相等的实数根,求k的值,并求此时方程的根.

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III. Reading Comprehension (35分)

Section A

Directions: For each blank in the following passage, there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context.

Billions of people across the world use cell phones. Though cell phones can be wonderful, liberating tools of   50  , freeing us from the confines (界限) of an office and providing more leisure time, they often do the exact   51  . Cell phone use has   52   the line between work and non-work time, increasing stress and tension within families and between friends. As Eric Slate, author of Technoslave commented in his essay: "It seems the more '  53  ' we are, the more detached (不相连的) we become."

There is a risk of being too connected. While I was hiking in Spain, I got   54   a few times. I saw new sights and was surprised by   55   landscapes and towns I wouldn't have otherwise come across. Back in the US, whenever I got lost, I would always call a friend for   56   on my cell phone. With a cell phone, you're less   57   to go down the wrong street and see new things or unexpectedly meet new people.

So, when I recently returned home to Burlington, Vermont, I   58   my cell phone and traded in an old, rusty bike for a regular landline telephone that was connected to the wall and everything. Now, I go outside and don't make a phone call or check my phone.   59  , I've seen things in my neighbourhood I   60  noticed before, like a big flower garden around the block and artwork and sculptures down the road. Now that I'm not __61___ my cell phone, I've met new people on the street and at the supermarket, started   62   with neighbours I haven't spoken with before and talk with my friends face-to-face instead of over the phone. .

Instead of   63   me from the world, getting rid of my cell phone has helped me become more in touch with my community. I am no longer a   64   of my cell phone.

50. A. information                B. communication         C. learning                   D. exchange

51. A. opposite                     B. same                        C. wrong                      D. right

52. A. misused                            B. limited                     C. troubled                  D. confused

53. A. affected                            B. separated                  C. connected                 D. satisfied

54. A. exhausted                  B. disappointed             C. lost                          D. attracted

55. A. inaccessible             B. unexpected               C. familiar                    D. similar

56. A. attention                   B. destination                C. direction                  D. action

57. A. eager                         B. likely                       C. willing                     D. interested

58. A. made use of               B. hung up                   C. got rid of                 D. got hold of

59. A. Therefore                   B. However                  C. Besides                    D. Instead

60. A. once                          B. often                        C. never                       D. ever

61. A. happy with          B. crazy about        C. glue to            D. aware of

62. A . interviews             B. arguments         C. visits                     D. conversations

63. A. isolating                    B. saving                      C. protecting                 D. removing

64. A. fan                                   B. master                      C. friend                      D. slave

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简述公共政策的基本功能。

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动脉伴行的神经是(),与胫神经伴行的动脉是()。

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下面不能体现矛盾双方相互转化的是()。

A.福兮祸所伏

B.反者动之道

C.民主与专制此消彼长

D.否极泰来

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