Ⅰ．单词拼写
1．The ________(根) of a plant are the parts of it that grow under the ground.
2．Lots of people don’t ________(费心) to go through a marriage ceremony these days.
3．If someone ________(射击) a person or an animal, they kill them or injure them by firing a bullet or arrow at them.
4．A new kind of car travelled 3，145 miles on a single ________(加仑) of gas.
5．It’s obvious that the beautiful house is built of ________(砖).
6．The fact that we like and respect each other is a good ________(基础) for cooperation.
7．An ________(研究所) is an organisation set up to do a particular type of work, especially research or teaching.
8．We believe the time and hard work ________(相关的) in completing such an assignment are worthwhile.
【答案】1．roots 2．bother 3．shoots 4．gallon 5．bricks
6．foundation 7．institute 8．involved
