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 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.
单项选择题
Why did the applicant reply Then I'll never get the job
A．Because he was a Mashona.
B．Because he was not a Mashona.
C．Because he could do the job.
D．Because he had no such ability.
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