问题
完形填空
World Wildlife Fund (WWF)'s goal is to save the world's environment. The organization was set up ___21__September 11，1961. In the beginning, WWF worked __22__ the world's wildlife. Now, it works to save Earth__23___ its environment. WWF has many tasks. One is to stop air pollution. Pollution from industry(工业) and cars is _24_ to our environment. Each year, more and more trees are cut down __25__WWF tries to protect Earth's forests．Also people use more land, more and more animals are __26__ their homes and many die. WWF can buy important areas to __27__ the land from disappearing because of human development. WWF has completed many projects. In China, WWF works to save pandas from extinction（灭绝）． ___28__South America，it works to save the Amazon Rainforest. Volunteers and donations help WWF complete its work. WWF's work is __29__to our environment, and is also important for people to help them __30__ time and money.
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答案
小题1:C
小题2:B
小题3:A
小题4:D
小题5:C
小题6:B
小题7:C
小题8:C
小题9:B
小题10:D
小题1:在具体一天的前面用用介词on，故选答案为C
小题2:主要考查的是动词不定式短语表示目的状语，故选答案为B
小题3:本题中需要的引导的连接词为and，表示并列的意思。
小题4:do harfful to ，表示对于···他人，表示对于他人有害处。
小题5:前后两句子的关系为并列关系关系，故选and，答案为C
小题6:本题应该用现在进行时，其结构为主语+be+doing ，故选答案为B
小题7:prevent sb from doing表示阻止某人做某事。
小题8:在某个地名用介词in，表示在···地方，故选答案为C
小题9:be important to sb，表示对于某人是重要的，故选答案为B
小题10:help sb with sth，表示在某些方面帮助某人。