问题
选择题
下列是几种原子的基态电子排布,电负性最大的原子是( )
A.1s22s22p4
B.1s22s22p63s23p3
C.1s22s22p63s23p2
D.1s22s22p63s23p64s2
答案
答案:A
下列是几种原子的基态电子排布,电负性最大的原子是( )
A.1s22s22p4
B.1s22s22p63s23p3
C.1s22s22p63s23p2
D.1s22s22p63s23p64s2
答案:A
完形填空。 |
A young man 1 himself in Japan with only enough money to buy the ticket for his 2 back home. As he knew that it would take him only two days to 3 home, he decided that he could easily spend the time 4 food. So he bought a ticket and 5 the ship. The man 6 his ears to the sound of the lunch bell. When dinner 7 came, he didn't go to the dining room, 8 that he was not feeling well. The next morning he still didn't have breakfast and at lunch time he again 9 in his room. But at dinner time he was so hungry that he went to the dining room and 10 everything the waiter put in front of him. "Bring me the bill," he said. "The bill, sir?" said the waiter in surprise. "There isn't any bill. On our ship meals are included in the money for the ticket." |
( ) 1. A. reached | B. reach B. road B. reached B. with B. got off B. opened B. time B. said B. kept B. took | C. found C. journey C. take C. without C. runs to C. stopped C. party C. say C. walked C. ate | D. found out D. plane D. get D. near D. put on D. kept D. dish D. saying D. shouted D. looked |