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【单选题】
光发生反射的规律为A.
入射线、折射线与法线在同一平面内,入射角等于反射角
B.
来自不同方向的光线相遇时互不影响,仍朝各自的方向前进
C.
在均匀介质中,光沿着直线传播
D.
沿着一定线路传播的一条光线,可以沿从相反方向返回通过发光点
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【单选题】It was ______ great shock to the girl when _____ word came that her close friend died in the severe earthquake of Haiti. [ ]
A.
a; /
B.
the; the
C.
a; the
D.
/; the
【简答题】n . a severe shock which may cause psychological damage
【多选题】Ethical issues with BRAIN Initiative are:
A.
What benchmarks should be adopted for testing new methods before they are put to use with humans, and who should make such decisions?
B.
What level of antecedent evidence is necessary to justify translating preclinical research into work with human subjects?
C.
When contemplating testing new methods in people who have brain disorders and diseases, what is the best way to balance decision-making between the patient and legal surrogate in deciding on an acceptable level of risk?
D.
Can we maintain social justice when new expensive drugs and therapies are discovered and used in patients with neurodegenerative diseases?
【多选题】关于酶竞争性抑制的论述正确的是
A.
抑制剂与酶进行可逆结合时,都是竞争性抑制
B.
酶与抑制剂结合的部位不同于与底物结合的部位
C.
抑制作用强弱随底物浓度而改变
D.
反应速度依赖于没有与抑制剂结合的酶分子
E.
抑制剂结构与底物不相似
【判断题】Shock in severe degree or in late stage can promote the occurrence of DIC
A.
正确
B.
错误
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