单项选择题

Which of the following best states the main idea of the passage

A．Cold-blooded animals can develop fevers.
B．There are benefits to developing fevers.
C．Fevers inhibit bacterial growth.
D．Lizards can develop fevers.

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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

单项选择题

Which of the following statements is true7

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 cold-blooded animal.
D．Sick lizards move into the sun to develop fever.