1.His influence over union members_____since his failure to strive higher wages for them.

a.destroyed
b.descended
depressed
declined

2.There is a____of raw material for the products.As a result, the prices are sky-rocketing.

a.demand
b.surplus
c.scarcity
d.inadequacy

3.The indecisive man was persuaded into changing his mind____though he wasnt aware of it.

a.hardly
b.voluntarily
c.unwillingly
d.readily

解析：

解析：
1.答案选d.destroy毁灭,descend向下，depress压抑，decline变弱.
2.答案选c.demand需求，要求，surplus过剩，盈余，scarcity缺乏，供不应求，inadequacy不足.
3.答案选d.readily欣然，无困难地,所以d项是正确答案.

1.The____estimate of gains in gross national product suggested a fast recovery from economic recession.

a.introductory
b.possible
c.preliminary
d.primary

2.My father was ____by the neighbours that we were in the risk of being burgled if we left the house with nobody at home.

a.charged
b.admonished
c.notified
d.warned

3.When typing it is advisable to have a wide _____on both sides of the page.

a.border
b.column
c.surround
d.margin

解析：
1.答案选c.introductory介绍的，possible可能的，preliminary初步的，primary原始的.
2.答案选d.charge控告，索价，admonish训诫，notify通知，warn警告.
3.答案选d.margin指页边空白，符合题意.