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【单选题】
下列有关药物安全性的叙述, 不正确 的是A.
LD50/ED50 的比值越大 , 用药越安全
B.
LD50 越大 , 用药越安全
C.
药物的极量越小 , 用药越安全
D.
LD50/ED50 的比值越小 , 用药越安全
E.
ED50 越大，用药越安全
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举一反三
【单选题】The article suggests that______.
A.
our earth exists before the sun
B.
how space is formed
C.
no one knows where the earth comes from
D.
our earth used to be a high mountain on the sun
【单选题】屈肘关节的肌肉是
A.
肱肌、肱二头肌、肱桡肌
B.
肱肌、肱二头肌、喙桡肌
C.
肱肌、肱二头肌、旋前方肌
D.
肱肌、肱二头肌、肱三头肌
E.
肱肌、肱三头肌、肱桡肌
【判断题】A concluding paragraph is your chance to remind the reader of your thesis idea and bring the paper to a natural and graceful end.
A.
正确
B.
错误
【简答题】The article suggests that ______ allow economic invasive species to do what they want and ually lead to monopolies.
【单选题】Why it is better to save your concluding words for after the last Q&A response?
A.
Because in this way I can make the audience have a better understanding of my point.
B.
Because this is a good way for me to reduce the tension when I have nothing to say.
C.
Because I have no time to give a conclusion in my presentation.
D.
Because I can use the concluding words to replace my last answer.
【单选题】How many questions for you to check about your concluding paragraph are listed?
A.
1
B.
2
C.
3
D.
4
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