50. Which of the following happened during their canoe trip?
A、They became angry with each other.
B、They were wounded by a wild animal.
C、They held each other to keep warm in the tent.
D、They often lost their way in the forest.
I . Phonetics( 5 points)Directions:In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.1.( )
A、cake
B、gas
C、bag
D、tax
36. Which of the following is people' s natural response to pain?