If you are human, you can’t help but experience times when e

If you are human, you can’t help but experience times when everything seems to be going wrong and you feel as if your life is completely out of control. It is during those “down times” that words of encouragement from family, friends, co-workers or even strangers can lighten your spirits. It is also during those times that destructive words can sink you deeper and deeper into depression.
For example, consider this story about a group of frogs who were traveling through the woods when two of them fell into a deep pit （坑）. All of the other frogs gathered around the pit. When they saw how deep the pit was, they told the two unfortunate frogs they would never get out.
The two frogs ignored the comments and tried to jump out of the pit. The other frogs kept telling them to stop. Finally, one of the frogs took heed of what the other frogs were saying and simply gave up. He fell down and died. The other frog continued to jump as hard as he could. Once again the crowd of frogs shouted at him to stop the pain. The more they shouted, the harder he jumped and finally he made it to safety.
When he got out, the other frogs asked him why he continued to jump when they were all shouting at him to simply quit. The frog explained to them that he was a little bit deaf. He thought they were encouraging him the entire time.
Every time you have a chance to say either something positive or negative to another human being, do choose the chance to say something positive! Don’t let those opportunities get away from you. Your words have a large amount of power. Use them wisely. You really never know just how much they can mean to someone else.
68. The first paragraph tells us that words play an important part especially when         .
A. we stay with our family, friends and co-workers
B. we hear strangers say something to us
C. we get through hard times in life
D. we make some big mistakes
69. The underlined phrase “took heed of ” had the similar meaning with “     ”.
A. acted according to            B. had some doubt
C. held on to                   D. got used to
70. The more they shouted, the harder he jumped and finally he made it to safety. That’s because        .
A. he struggled to prove that they were wrong  
B. he thought they were encouraging him
C. he was angry with what they said              
D. he didn’t want to let them down
71. After reading the passage, readers should learn a lesson that        .
A. we can use encouraging words to help others out 
B. having a positive attitude is important in life
C. never give up until we win   D. we must believe in ourselves rather than others