我国西北山系现有冰川面积大幅缩减的原因有 ①酸性气体的大量排放导致酸雨 ②农业生

You know that pearls grow inside oysters(牡蛎), but would you ever think to look for diamonds inside an ostrich(鸵鸟)? Well, a hunter once shot an ostrich and discovered, to his great surprise, that the big bird had swallowed a bunch of diamonds. How could such a strange thing happen?

Like many other birds, the ostrich swallows small stones that stay inside its “gizzard”. The gizzard is a bird’s second stomach. It is where the food is ground up. The small stones help to grind up the food so it can be digested. The small stones do the chewing because birds don’t have teeth. In that case of the ostrich with the diamonds, the bird simply had expensive taste in rocks. It used the diamonds to digest its dinner.

Diamonds and stones aren’t all that an ostrich will swallow. If there are no stones around, it will eat just about anything. Sadly for ostriches in zoos, this can be a fatal habit. The tendency to swallow anything it sees has caused the death of many an ostrich. Cruel or careless people often throw things into the bird’s living space. They throw keys, coins, and even large objects such as horseshoes. The ostrich swallows them without hesitation. Coins can be the worst. Inside the ostrich they wear down to a razor-sharp edge. They will cut open the bird’s gizzard from the inside. When one young zoo ostrich died, 484 coins weighing more than eight pounds were found in its gizzard.

小题1:

Which of the following best expresses the main idea of the passage?

A．Birds often eat strange and funny things.

B．Ostriches will swallow anything to help them digest food.

C．One ostrich died with 484 coins in its gizzard.

D．Ostriches are often hurt by cruel or careless people.小题2:

The ostrich is not smart enough to ______.

A．digest its own food

B．eat only diamonds

C．avoid eating harmful objects

D．escape from the zoo小题3:

The sentence “the small stones do the chewing” makes rocks seem as though they were ______.

A．important

B．alive

C．dangerous

D．uncomfortable小题4:

he word “fatal” in the third paragraph is another word for “______”.

A．foolish

B．careless

C．deadly

D．cruel

会计职业道德评价的根本标准是( )

A．是否有利于社会生产力发展

B．是否有利于国家会计法律法规和会计制度的落实

C．是否有利于保证各项会计业务工作的正常秩序和单位的发展

D．是否有利于充分调动员工的积极性

在窗体上画一个命令按钮，然后编写如下程序：
Option Base 1
Private Sub Command1_Click( )
Dim Arr1(12)As Integer，Arr2(3)As Integer
Dim Smm As Integer
Sum=2
For i=1 To 12
Arr1(i)=i
Next i
For i=1 To 3
Arr2(i)=Arr1(i*i)
Next i
For i=1 To 3
Sum=Sum+Arr2(i)
Next i
Print Sum
End Sub
程序运行后，单击命令按钮，在窗体上的输出结果是______。

A．16

B．24

C．32

D．36

不论是企业外部筹集的资金，还是内部形成的资金，都要考虑资金成本。 ( )

离心泵使用机械密封时，若介质为轻油，则允许机封泄漏为（），若介质为重油时，则允许机封泄漏量为（）。