18.A　encouragement“鼓励”;determination“决心”;tendency“趋势”;attempt“尝试”。由“If you want to be a writer,go for it!Pursue writing!”得知,Ralston先生鼓励作者去追逐自己的梦想,应选A项。

　　19.B　Ralston先生的鼓励排除了作者对从事写作的恐惧,故选B项。

　　20.C　peak“顶尖的”;low“低的”;due“应有的,到期的”;new“新的”。in due season“恰逢其时”。

　　二、七选五阅读填空(共5小题;每小题2分,满分10分)

　　The increasing environmental problems and need for eco-friendly products and services are creating a new job section of green-collar jobs.　1　 It is expected that by 2025 about 25% of the jobs in developed countries will be of green-collar jobs.Doesn’t the data look promising for the future? 

　　　2　 And jobs will pop up at every income level,from environmental manager to gardener.For example,many countries including the United States have understood that fossil fuels have negative effect on the environment which can later become a serious danger to mankind.　3　 The increasing demand of newer resources has created the need for experts and researchers who can find better ways to deal with the ongoing needs.In addition,in order to meet the increasing demands of environment-friendly equipment,both green product designer and educated and trained workers are needed.Management of environmental organizations also demands a large number of environmental managers. 

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