单项选择题

四环素类和氯霉素均会产生的不良反应为( ) A.
肝损害 B.
影响牙骨生长 C.
抑制骨髓造血机能 D.
灰婴综合症 E.
二重感染

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单项选择题
Everyone is sensitive to extreme weather condi?tions. But with age, the body may become less ableto respond to long exposure to very hot or verycold temperatures. Some older people mightdevelop hypothermia when exposed to coldweather. Hypothermia is a drop in internal bodytemperature, which can be fatal if not detectedand treated.150. The paragraph best supports the statementthat
A.cold weather is more dangerous for olderpeople than warm weather
B.. hypothermia is a condition that only affectsolder people.
C.. older people who live in warm climates are healthier than older people who live incold climates
D.. an older person is more susceptible tohypothermia than a younger person.
多项选择题
子囊菌亚门的特点是 A、双核菌丝 B、钩状体 C、锁状联合 D、子囊和子囊孢子
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