已知(1+xn)n=a0+a1x+a2x2+…+anxn,a3=116,则a1+

题型:填空题

问题:

已知(1+
x
n
n=a0+a1x+a2x2+…+anxn,a3=
1
16
,则a1+a2+…+an=______.
考点:二项式定理与性质
题型:填空题

有一些书,平均分给全班,每人分到12本,如果只分给女生,每人可分到20本.如果只发给男生每人可得______本.

题型:填空题

放射性活度

题型:填空题

在微型计算机中,硬盘及其驱动器属于()。

A.外存储器

B.只读存储器

C.随机存储器

D.主存储器

题型:填空题

You wake up in the morning, the day is beautiful and the plans for the day are what you have been looking forward to for a long time. Then the telephone rings, you say hello, and the drama starts. The person on tbe other end has a depressing tone in his voice as he starts to tell you how terrible his morning is and that there is nothing to look forward to. Are you still in a wonderful mood? Impossible!

Communieating with negative people can wash out your happiness. It may not change what you think, but communicating long enough with them will make you feel depressed for a moment or a long time.

Life brings ups and downs, but some people are stuck in the wrong idea that life has no happiness to offer. They only feel glad when they make others feel bad. No wonder they can hardly win others' pity or respect.

When you communicate with positive people, your spirit stays happy and therefore more positive things are attracted. When the knife of a negative person is put in you, you have the heavy feeling that, all in all, brings you down.

Sometimes we have no choice but to communicate with negative people. This could be a co-worker, or a relative. In this case, say what needs to be said as little as possible. Sometimes it feels good to let out your anger back to the negative person, but this is to lower you to that same negative level and they won't feel ashamed of themselves about that.

Negativity often affects happiness without even being realized. The negative words of others at the start of the day can be attached to you throughout the rest of your day, which makes you feel bad and steals your happiness. Life is too short to feel negative. Stay positive and avoid negativity as much as possible.

小题1:Which of the following shows the position where the miners were trapped? (E: entrance P: position where the miners were trapped)

小题2:The purpose of Paragraph 1 is to  .

A.make a comparison

B.introduce a topic

C.offer an instructive story

D.tell a true story小题3:How can negative people have effect on us?

A.By influencing our emotion.

B.By telling us the nature of life.

C.By changing our way of thinking

D.By comparing their attitude to life with ours.小题4:Some negative people base their happiness on   —.

A.their pity for other people

B.their respect for others

C.building up a positive attitude

D.making other people unhappy小题5:According to the passage, to reduce negative people's influence on us, we are advised.

A.to change negative people's attitude to life

B.to show our dissatisfaction to negative people

C.to make negative people feel as hamed of themselves

D.to communicate with negative people as little as possible

题型:填空题

电子邮件通常使用的协议有( )。

A.SNMP和POP3
B.SMTP和RMON
C.RMON和SNMP
D.SMTP和POP3

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