密集放顶支柱适于顶板（），空顶区有悬顶的工作面，用以切断采支区的悬顶。
A.坚硬
B.松软
C.破碎
D.完好
参考答案：A
第Ⅱ卷
五、单词拼写（10分）
根据中文意思写出相对应的英文单词：
71．It’s reported that scientists have made a ___________ (突破) in cure for cancer.
72．He has made great contributions to his country and is regarded as a ___________(杰出的)young scientist.
73．Girls are always ___________ (敏感的)to their clothes.
74．His writing style is ___________(独一无二的).
75．It’s time to go ___________ the airplane.(登机)
76．___________(相对)speaking, his idea is more practical than his
根据首字母写出相对应的英文单词：
77．His good health b_________from daily exercise.
78．The temperature r____________between 30 and 40 degrees centigrade.
79．He jumped into the river to save the drowning girl without h .
80．The travel agency has a ____________ everything for our trip to Canada.
狂犬病的潜伏期是多长时间，其时间长短与哪些因素有关？
