盲人定向行走培训的工作原则有哪些？（）
A、针对性原则
B、实效性原则
C、安全优先原则
D、实用性原则
参考答案：A, C, D
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第五节根据课文原文填入所缺内容。（共5小题；每小题1分，满分5分）
91. Just accept them for who they are, and give them encouragement to ________a life as you do.
92. Asimov had both an __________that gave him the ability to explore future worlds and an amazing mind.
93. __________ for seeing whales on our tours is 98%.
94. This gives you __________ to practice speaking English .
95. It’s a great __________ family to be with.
热电偶冷端的温度补偿有那几种？
