单项选择题

Scorpions injected with prostaglandins move to hot areas to __________.

A．engage in greater activity
B．seek out a more-iron environment
C．demonstrate that they are ill
D．develop a fever and fight bacterial infections
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单项选择题
Which of the following best states the main idea of the passage
A．Coldblooded animals can develop fevers.
B．There are benefits to developing fevers.
C．Fevers inhibit bacterial growth.
D．Lizards can develop fevers.
单项选择题
Which of the following statements is true
A．Developing fever is the privilege of warm-blooded animals, so sick lizards can not run a fever.
B．Invertebrates also have the ability to raise their temperature.
C．The internal temperatures of warm-blooded creatures are independent of the weather, so are the coldblooded animal.
D．Sick lizards move into the sun to develop fever.
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