乙脑特异性IgM抗体具有如下特征（） A.一般在起病后3～4天出现，脑脊液中最早在病

列二元一次方程（组），解应用题．

（1）今年某些农产品的价格有所上涨．张大叔在承包的10亩地里所种植的甲、乙两种蔬菜共获利13800元．其中甲种蔬菜每亩获利1200元，乙种蔬菜每亩获利1500元．则甲、乙两种蔬菜各种植了多少亩？

（2）现有布料25米，要裁成大人和小孩的两种服装，已知大人每套用布2.4米，小孩每套用布1米．问各裁多少套能恰好把布用完？

完形填空（共10小题；每小题2分，满分20分）

阅读下面短文，掌握其大意，然后从21～30各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

Recently divorced in my 30s, I had no job and was on my way downtown on a rainy day to go to the employment offices. I had no umbrella, for my old one had   21  apart, and I couldn’t afford another one.

I sat down in the streetcar — there against the   22  was a beautiful silk umbrella with a silver handle inlaid with gold and bright enamel(珐琅). I had never seen anything so lovely. I

  23  the handle and saw a name on it. The   24  procedure would have been to turn in the umbrella to the conductor, but I decided to take it and find the   25  myself.

I got off the streetcar in a downpour and   26  opened the umbrella to protect myself. Then I searched a telephone book for the   27  on the umbrella and found it. I called and a lady answered. Yes, she said in   28 , that was her umbrella, which her parents, now dead, had given her as a birthday present, but it’d been   29  from her locker at school years before.

She was so excited that I forgot I was looking for a job and went   30  to her house. She took the umbrella, her eyes filled with tears. I was only too happy to see her get back the lost umbrella, and get a job she offered me.

21．A．taken                      B．torn                        C．broken                    D．fallen

22．A．seat                        B．door                       C．engine                    D．floor

23．A．watched                  B．shook                     C．examined                D．tested

24．A．usual                      B．ordinary                 C．normal                   D．odd

25．A．thief                       B．owner                     C．robber                    D．keeper

26．A．hopefully                B．helpfully                 C．carefully                 D．slowly

27．A．name                      B．number                   C．address                   D．brand

28．A．happiness                B．disappointment        C．laughter                  D．surprise

29．A．robbed                   B．stolen                     C．taken                      D．hidden

30．A．simply                    B．calmly                    C．directly                   D．suddenly

社会保险是()

A．建立在自愿的基础上

B．给付标准比商业保险高

C．具有强制性

D．费用由国家承担

在关系模型中，把数据看成是二维表，每一个二维表称为一个_________。

腐熟的人粪尿较适合于下列（）作物

A、马铃薯

B、甜菜

C、水稻

D、白菜