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r skindiving. You can clean ships without taking them out of the water. You can get many things from the deep water. Now you see the skindiving is useful and interesting.( )26. Skindiving is going to take you to _______. A. the deep water B. be in danger C. mountains ( ) can climb big rocks easily under the water because_____. A. you are stronger B. the fish nearby help you C. you are lighter than on land( )28. Under the water, a skindiver ________in the daytime A. can see everything clearly B. can39。t see anything clearly C. can see nothing( )29. With a tank of air on your back, you can________.A. catch fish very easilyB. stay under the water for a long time C. have more fun( )30. From the passage we can know that skindiving is_______. A. harmful B. not useful C. useful and interesting C It was a Monday morning. As the teacher walked into the classroom, he heard a low voice(低聲), “Here39。s the teacher. I39。m sure this boring fellow(家伙)is going to talk about how to use mas(逗號).”It was a boy39。s voice and the teacher knew who he was. However, the teacher didn39。t get angry. He said nothing about it, but really began to talk about how to use mas And then he wrote the following sentence on the blackboard, “Nick says the teacher is a boring fellow.” The class laughed and Nick39。s face turned red. “Now,” said the teacher, “I39。11 tell you the importance of mas.” He put two mas in the sentence, and then read, “Nick, says the teacher, is a boring fellow.” The whole class laughed again. Nick felt very surprised first, then his face much redder. Finally he couldn39。t help(情不自禁) laughing with the other students, too.( )31. What subject did the teacher teach the students? A. Math B. English C. Music( )32. What kind of boy was Nick like? _______. A. A tall boy B. A healthy boy C. A funny boy( )3 3. I think Nick liked to have ______lessons. A. boring B. interesting C. no( )34.“Nick says the teacher is a boring fellow.”is _______“Nick says th