【简答题】Ms. Lee recommends that the student who was late this morning (speak)______to the director.
【简答题】Director Lee wants to hold the meeting __________ .
【单选题】下列说法不正确的是( )
A.
分子式为C 3 H 8 与C 6 H 14 的两种有机物一定互为同系物
C.
两个相邻同系物的相对分子质量数值一定相差14
D.
分子组成相差一个或若干个CH 2 原子团的化合物必定互为同系物
【单选题】下列说法不正确的是 [ ]
A.
分子为C 3 H8与C 6 H 14 的两种有机物一定互为同系物
C.
两个相邻同系物的相对分子质量数值一定相差14
D.
分子组成相差一个或几个CH 2 原子团的化合物必定互为同系物
【单选题】Why does Professor Lee write to Lucas?
A.
Because Professor Lee wants him to read the news on the newspaper.
B.
Because Professor Lee wants him to publish his composition on a magazine.
C.
Because Professor Lee needs his help on writing.
D.
Because Professor Lee wants him to learn English better.
【单选题】下列有关同系物的说法不正确的是
A.
分子组成相差一个或若干个CH 2 原子团的化合物必定互为同系物
C.
两个相邻同系物的相对分子质量数值一定相差14
D.
分子式为C 3 H 8 与C 6 H 14 的两种有机物一定互为同系物
【单选题】We don’t know what ideas the director, Zhang Yimou, wants to ______ to the audience of the world through the ceremony of the 2008 Beijing Olympic Games. [ ]
【判断题】汽车传动系的布置形式主要与发动机的安装位置有关,而与汽车的驱动形式关系不大。
【单选题】下列说法不正确的是
A.
分子式为C 3 H 8 与C 6 H 14 的两种有机物一定互为同系物
C.
分子式C 4 H 10 表示的物质必是纯净物
D.
有机物 的名称:2,3,5-三甲基-4-乙基庚烷