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【多选题】
下列描述中与吗啡性质相符的是 （ ）A.
在盐酸或磷酸存在下加热后，再加稀硝酸呈红色
B.
发生变质
C.
有芳伯胺的特征反应
D.
与钼硫酸试液反应呈紫色，继变为蓝色
E.
与甲醛硫酸试液反应呈紫堇色
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反馈参考答案：
举一反三
【单选题】He smiled and waved to the crowds _______ him,
A.
waited for
B.
waiting for
C.
waited
D.
waiting
【单选题】The president said that he would cancel the visit, ______ that he was waiting for a better time.
A.
having added
B.
to add
C.
adding
D.
added
【单选题】Allen said that he won't mind ______.
A.
to wait for us
B.
for waiting us
C.
him waiting for us
D.
wait for us
【单选题】What does George think about the long waiting?
A.
He thinks it terrific.
B.
He thinks the waiting is worthy.
C.
He feels comfortable waiting so long.
D.
He feels disgusted.
【简答题】What does the man think about the long waiting? [A] He thinks it terrific. [B] He thinks the waiting is worthy. [C] He feels comfortable waiting so long. [D] He feels disgusted.
【单选题】历史活动课上,李明同学在扮演孔子时所说的台词应该是
A.
学而时习之，不亦说乎
B.
“兼爱” “非攻”
C.
祸兮，福之所依；福兮，祸之所伏
D.
知彼知己者，百战不殆
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