我国个税起征点从每月2000元提高到3500元。这一调整 ①表明国家利用再分配调

He had been practicing his spoken English with the ____ of working as a volunteer for World Expo Shanghai and his dream finally came true.

A．effort

B．exception

C．intention

D．contribution

声音要靠______传播，某同学测出声音在空气中2s的时间内传播的距离是690m，由此他计算出声音在空气中传播的速度是______m/s．

变电站通用设计、通用设备专题内审意见表，由业主项目部在（）时编写。

A.初步设计评审前

B.初步设计评审后

C.物资采购阶段

D.工程施工阶段

I’m just wondering ___ I first met Tom.

A．where it was that

B．that was it where

C．where was it that

D．that it was where

血液白细胞增多，异型淋巴细胞增多，血小板减少多见于（）。

A.恙虫病

B.败血症

C.钩端螺旋体病

D.登革热

E.流行性出血热