皮皮学，免费搜题
登录
搜题
【单选题】
对毒作用带描述错误 的是A.
半数致死剂量与急性阈剂量的比值为急性毒作用带
B.
急性阈剂量与慢性阈剂量的比值为慢性毒作用带
C.
急性毒作用带值大，引起死亡的危险性大
D.
慢性毒作用带值大，发生慢性中毒的危险性大
E.
急性毒作用带值大，引起死亡的危险性小
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】A．Guess its meaning. B．Ask somebody. C．Refer to a dictionary. D．Add it to your word list.
【单选题】We can hardly find any expressions that refer to the word“dog” to describe weather conditions.
A.
True
B.
False
【单选题】To avoid on how to use the word, you’d better refer to a dictionary.
A.
to get confused
B.
getting confused
C.
to get confusing
D.
getting confusing
【单选题】The meaning of a word can be guessed according to the context, so you will not __________ refer to a dictionary the next time __________ you come across a new word.
A.
really, when
B.
exactly, that
C.
likely, which
D.
necessarily, /
【单选题】听力原文： People over the age of 65 in the U.S. are called senior citizens. Life for these people is different than for younger Americans. Most senior citizens retire, or no longer work full time. Also it...
A.
The influence of old people in the U.S.
B.
Changes in American families.
C.
Citizens and life in the U. S.
D.
The old people in the U. S.
【单选题】Foreign bonds issued in the U.S. are called ________.
A.
bulldog bonds
B.
yankee bonds
C.
samurai bonds
D.
dragon bonds
【简答题】A．Guess its meaning. B．Ask somebody. C．Refer to a dictionary. D．Add it to your word list.
相关题目：