【单选题】It is suggested in Paragraph 4 that______.
A.
loss of memory can be attributed to stress
B.
post-traumatic stress is a kind of brain disorder
C.
severe stress may hinder memory forming
D.
chronic distress has not been correctly dealt with
【单选题】High levels of stress or _________ stress can lead to heart attacks, stroke, high blood pressure, heart disease, and many other detrimental health conditions.
【简答题】孔的公差带在轴的公差带之上为()配合;孔的公差带与轴的公差带相互交迭为过渡配合;孔的公差带在轴的公差带之下为过盈配合。
【单选题】______ (长期的) stress has even more ways that can sabotage your health.
【单选题】Chronic ______ stress, such as depression and anxiety, can bring about the negative influence on immune and nervous system.
【单选题】____ stress can increase the risk of diseases such as depression, heart disease and even cancer.
【单选题】在不同生物中的超氧化物歧化酶(SOD)含有不同的金属元素,原核生物中的SOD一般都是含( )的。