问题 填空题

有S2﹣和S两种粒子,回答:

(1)S2﹣中的“2”表示 _____________

(2)S2﹣和S的质子数 _________ (填相同或不同);

(3)已知S2﹣有16个质子,则其核外共有 _________ 个电子;

(4)如果硫单质中有一种相对分子质量为128的硫分子,则该单质的化学式为 _______ .(S 的相对原子质量为32 )

答案

(1) 1个硫离子带2个单位负电荷 ;

(2) 相同 ;

(3) 18 ;

(4) S4

阅读理解
阅读理解。
                                                              David Beckham 
      As a Manchester United player, David Beckham is used to winning. He is one of the most famous
Englishmen in the World today.
      Of course, it is impossible to have an unbiased opinion of this young man or the team that he plays
for. If you are a Man Utd fan, you love him. If you aren't a fan of this team, then your opinion of Mr.
Beckham may be quite different. In fact, in recent times, his treatment by fans of other teams has been
extremely unsavoury, especially when he has been playing for England. Some of the worst words have
not even been aimed at Beckham but at his wife and young child, which is a bad thing. It has been hard
for the football leaders to control such unruly behaviour. How can you discipline people for their comments
when so many people are guilty? But under the pressure of being shouted at by so many people, he has
always remained calm. 
      Of course, a lot of the bad things about Beckham are due to his own actions. He is a very fashionable
young man, but some of the clothes he has worn have been simply amazing. Why a person in his position
would choose to wear a skirt in public is truly unbelievable! Furthermore, to wear such things in
unseasonable times as mid-winter seems even crazier!
      His behavior on the football pitch has also been unpredictable at times. Sometimes he is brilliant;
sometimes he does crazy things. Some of the most famous footballing incidents involving Beckham are not
his spectacular goals but his ungainly tackles. The most famous occasion was in France '98, when a clumsy
tackle led to him being sent off.
      However, he is not guilty of such things, and if he can stop such behavior he could even become
England'next captain.
1. David Beckham is ______ in the world.
[ ]
A. unknown
B. not popular
C. famous
D. unfashionable
2. Once, Beckham wore ______ in public in mid-winter.
[    ]
A. T-shirt
B. uniform
C. earring
D. skirt
3. Which one is Right?
[ ]
A. Everyone loves David Beckham.
B. Some people say bad things about the Beckham's.
C. Beckham never makes mistakes on the football pitch.
D. Beckham must be England 'next captain'.
4. Beckham was sent off in France'98, because of ______.
[ ]
A. his fame
B. his tackle
C. his words
D. his braveness
问答题