单词巧练 写准记牢
Ⅰ.核心单词练习：请根据所给的词性和词义写出单词
1．________adj. 担心的；烦恼的
2．________adj. 坚实的；稳固的
3．________n. 基础；地基
4．________vt. 参与；包含
Ⅱ.常用单词练习：根据句意和所给的首字母或中文提示写出符合句中单词的正确形式
1．I visited a number of research i________ in Asia.
2．Bake the cakes until they are f________ to the touch.
3．The builders are now beginning to lay the ________ (地基) of the new school.
4．He had a ________ (砖) thrown at him at that meeting.
5．He was ________ (参与) in a heated argument.
6．Even if you plant the seed upside down, the r________ will still grow down.
7．Two weeks after we'd planted the seeds, little green s________ started to appear.
8．He's very b________ about what people think of him.
