1 . 词性转换
1. minor adj. 较小的；次要的；轻微的→________________n. 少数；少数民族
2. electric adj. 电的；用电的；电动的→________________adj. 与电有关的→________________n. 电
3. swell vi. (swelled, swollen) 膨胀；肿胀→________________adj. （身体部位）肿起的；肿胀的
4. bleed vi. (bled，bled)流血；失血→________________n. 流血；失血
5. desperate adj. 绝望的；孤注一掷的；非常需要的→________________adv. 绝望地；孤注一掷地→________________n. 绝望
6. practice n. & v. 练习；实践→________________adj. 切实可行的；实际的；实践的
7. tight adj. 牢固的；紧身的；绷紧的；严密的；（经济）紧张的 adv. 紧紧地；牢固地→________________adv. 紧紧地；牢固地；紧密地→________________vt. （使）变紧；（使）加紧

2 . China has ________ improved the living standards of the ordinary people in the past four decades.

A．necessarily

B．additionally

C．dramatically

D．desperately