Ⅰ.单词集训
A．词形转化
1．—How long did David work here?
—For half a year. He didn't leave much impression (impress) on us.
2．Though difficult, I managed to help him find a job, which made him very pleased (please)．
3．Nowadays more and more traditional (tradition) businessmen feel worried that growing ecommerce will decrease their share of the market.
4．It is often cloudy or misty (mist) and it rains now and again, so people don't get much sunshine in the year.
5．He created a travel company that helped bring people to the Middle East for multicultural (multiculture) visits.
6．In South Carolina, for example, the new governor (govern) was a former army officer from the state of Ohio.
7．I once knew a wealthy (wealth) young man, who had everything he once dreamt of.
8．China is the world's most populous country with a population of 1.4 billion, which makes up approximately (approximate) one fifth of the world population.
9．They were terrified (terrify) when they heard that the lion had got out of its cage.
10．If we fail to slow down the rate of warming, the polar (pole) regions, as we know, will no longer exist.
