How many people were killed when Islamist militants hijacked plane crashed into the Defense Department headquarters
A. 111
B. 184
C. 181
D. 84
查看答案
Which statement of University of Maryland is INCORRECT
A. College Park is its flagship college.
B. It’s a state-run school.
C. It’s a prestigious school.
D. It’s in western America.
可使还原糖显棕黑色的显色试剂是
A. 三苯四氮唑盐
B. 苯胺一邻苯二甲酸盐
C. 3，5-二羟基甲苯一盐酸
D. 硝酸银
E. 过碘酸一联苯胺
About ______ new motor homes were sold last year.
A. 20,600
B. 46,000
C. 62,000
D. 186,000
黄酮类化合物可与强无机酸形成盐是因为其分子中含有
A. 羟基
B. 羰基
C. 双键
D. 氧原子
E. 内脂环
微信支付 
支付宝支付