题目内容
19．It is of great importance to protectthe environment from being polluted．分析 保护环境免遭污染是很重要的．
解答 答案：protect．
根据所给首字母提示结合语境推测句意是"保护环境免遭污染有着重要意义．"，表示"保护"用 protect，本句中的of great importance 相当于形容词important，根据设空处前面有to判断应填动词原形，所以答案是：protect
点评 做这类题型，首先根据所给单词首字母明确句子所要考查的单词的拼写，再结合相关语法知识对单词做出形式上的变化．
练习册系列答案
阅读快车系列答案
相关题目
What would the world be like if cars could drive themselves？Imagine seeing an empty car passing by on its way to pick up its owner，or a car full of passengers who are reading，listening to music or even sleeping．But none of them are worried about the road ahead．
7．If I________five minutes，I________everything ready．（ ）
| A． | am given； will get | B． | will give； will get | ||
| C． | will be given； get | D． | have； get |
14．--Where are you going for your winter holiday？
--I'm going to a place________ the weather is warm．（ ）
--I'm going to a place________ the weather is warm．（ ）
| A． | which | B． | where | C． | who | D． | what |
4．-Could you please tell me________，Sonia？
-It's on the first Tuesday of May．We hold special parties and give teachers thank-you notes that day．（ ）
-It's on the first Tuesday of May．We hold special parties and give teachers thank-you notes that day．（ ）
| A． | if you had Teachers'Day in America | |
| B． | when Teachers'Day is in America | |
| C． | what you did on Teachers'Day | |
| D． | how do you show your thanks to your teachers |