题目

81.The work of engineer requires ______________(智力) plus experience. 82.  _______ (下定决心) to finish our work ahead of schedule, we worked day and night. 83. The car is becoming a popular means of t ________ for more and more families nowadays. 84. Many of those ___________(企图，试图) to escape have been shot dead by border guards. 85. She is excellent in b ________，and she can always get cheap goods. 86. He finally founded his own advertising firm as well as a magazine for c_________ arts. 87. I do like cycling which is highly b________ to health and the environment如图，纸上有五个边长为1的小正方形组成的图形纸，我们可以把它剪开拼成一个正方形．（1）拼成的正方形的面积与边长分别是多少？（2）你能把十个小正方形组成的图形纸剪开并拼成正方形吗？若能，按上述方法剪拼出这个正方形并求出它的边长．