30.If a tourist wants to visit Lake Burley Griffin, he'd better choose ________.
A.The Giraffe Treehouse
B.The Ushaka House
C.The Burley Griffin House
D.The Shark House
答案:C 细节理解题。由“The Burley Griffin House”下的“...have splendid views across the lake...”可知。
31.The purpose of writing the passage is to ________.
A.attract more tourists to visit the National Zoo
B.introduce the Jamala Wildlife Lodge in Australia
C.raise people's awareness of protecting animals
D.offer visitors an opportunity to play with sharks
答案:B 推理判断题。由文章大意可知。
D
(2016·山西大学附中模块诊断)
Running on Empty
For almost a century, scientists have assumed, tiredness—or exhaustion—in athletes originates in the muscles(肌肉).Precise explanations have varied, but all have been based on the “Limitations Theory”.In other words, muscles tire because they hit a physical limit: they either run out of
fuel or oxygen or they drown in harmful byproducts(副产品).
In the past few years, however, Timothy Noakes from the University of Cape Town, South Africa, has examined this standard theory.Tiredness, he argues, is caused not by signals springing from overtaxed muscles, but is an emotional response which begins in the brain.The fundamental nature of his new theory is that the brain paces the muscles to keep them well back from the edge of exhaustion.When the brain decides it's time to quit, it creates unbearable muscle tiredness.This “Central Governor” theory remains controversial, but it does explain many puzzling aspects of athletic performance.
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