下列各项中表达正确的是[ ]
A.NaCl的电子式:
B.CO2的分子模型示意图:
C.CrO5的结构式为,该氧化物中Cr为+6价
D.次氯酸的结构式:H-Cl-O
答案:C
下图为分别在M、N、S三地记录到的日出时刻坐标图。读下图,完成下列问题。
小题1:图中M、N、S三处,按照纬度由低到高排列的是( )
A.M-N-S
B.S-M-N
C.S-N-M
D.M-S-N小题2:图中M、N、S三处,应位于( )
A.东半球
B.西半球
C.南半球
D.北半球
What does the speaker say about the artists in the United States during the Great Depression
A.Many artists lost faith in the value of art.
B.Many artists were forced to take jobs in other fields.
C.Many artists moved away from large cities.
D.Many artists in the United States moved to other countries.