... Beginning READING Building Skills for the TOEFL ® iBT ANSWER KEY Reading Section / Listening Section / Speaking Section / Writing Section 678 Answer Key Focus A Guided Practice 0 1 ... bladder, so they use their forward movement to control their vertical position. The tail is like the shark’s propeller. The shark swings it back and forth to move forward. In an airplane, this forward movement ... bladder, so they use their forward movement to control their vertical position. The tail is like the shark’s propeller. The shark swings it back and forth to move forward. In an airplane, this forward movement...
Ngày tải lên: 16/08/2013, 20:38
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