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Passage 1Questions 1 to 5 are based on the following passage.  The two claws of the mature American lobster are decidedly different from each other. The crusher claw is short and stout; the cutter claw is long and slender. (76) Such bilateral asymmetry, i

Passage 1Questions 1 to 5 are based on the following passage.  The two claws of the mature American lobster are decidedly different from each other. The crusher claw is short and stout; the cutter cla

Passage 2Questions 6 to 10 are based on the following passage:  Half of the world’s coral reefs(珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive. Even if global warning were to right now, scientists predict th

Passage 2Questions 6 to 10 are based on the following passage:  Half of the world’s coral reefs(珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive. Even if