简述自然种群的特征?

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问题:

简述自然种群的特征?

考点:生态学森林生态学森林生态学题库
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磁盘镜像的磁盘利用率是()。

A.30%

B.40%

C.50%

D.80%

题型:问答题 简答题

将下列句子填入语段的画线处,顺序最恰当的一项是[ ]

  但是,没有人会喜欢只有灰色的世界。_____。_____。_____,_____,_____,多彩保证了活力,而灰色提升着品位。这也就是和谐。

①这世界充满生命活力,姹紫嫣红,千姿百态,万类霜天竞自由

②灰色也只有在和其他色彩搭配时,才能显示它的普适性,显示它的高贵和纯粹

③也正因为有了思想的高贵、纯粹,纷繁的世界才不至于俗不可耐

④正因为有了生活的五彩缤纷,理论的灰色才不显得死寂

⑤因此,灰色又必须链接多彩的世界

A.②⑤①④③

B.②③④⑤①

C.①⑤②④③

D.⑤①②④③

题型:问答题 简答题

When you have a post-office box, the postman doesn’t bring letters to you, but you go to the post-office and get your letters and parcels from your box. The box is locked, only you have the key, so the letters and parcels are safe.

One day the headmaster of a school wrote to the post-office and asked for a post-office box for his school. He soon got an answer. It said, “We will give you a post-office box in one month.”

Three months later, the headmaster wrote to the post-office and said, “Why haven't we got a post-office box yet?”

This was the answer from the post-office:

“Dear sir,

We gave you a post-office box two months and wrote to you then to tell you. Here is the key to your box. You will find our letter to you in it.”

小题1:When you have a post-office box, _____.

A.it is easier for you to write letters

B.you will have more letters than parcels

C.you get your letters in front of your house

D.you got to the post-office to get your letters小题2:The word “key” in this passage means _____.

A.邮件

B.密码

C.编号

D.钥匙小题3:The headmaster _____.

A.wrote many letters to the post-office

B.didn’t like the postman

C.didn’t know how a post-office box worked

D.forgot to pay for the post-office box小题4:When the post-office said that you could get a post-office, he meant _____.

A.you may go to the post-office to get your mails

B.you must wait to get the post-office box

C.you must write again to get the key

D.you must pay for the box before you got it小题5:Which of the following might not be true?

A.If you want to get a post-office box, you must let the post-office know.

B.When you get a post-office box, you have to do the work of a postman.

C.You go to the post-office to get the key to your box.

D.After you get a post-office box, the post man will not send mails to your house.

题型:问答题 简答题

有下列哪些情形的,应当启动初步审查核实程序()。

A.局党组认为有必要的

B.各类机关、人民团体的领导作出指示、批示或建议的

C.各级人大代表、政协委员建议的

D.部门主要负责人反映下属员工不履行或不当履行工作职责的

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由于暑闭气机,则恶热、汗出、口渴、疲乏、脉虚数。

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