成片的苔藓植物对水土保持有一定的作用，这是因为苔藓植物[ ]

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问题选择题

A．密植的植株间的缝隙能够蓄积大量的水分

B．输导组织中能蓄积大量的水分

C．根系发达，能吸收大量的水分

D．环境湿润，叶的蒸腾作用非常小

答案

答案：A

填空题

Today I’d like to talk about how to become a (1) . Usually you have to start at the beginning. That is, you have to begin (2) of some sort on a local newspaper, a (3) , maybe on a small magazine -- work (4) . Now there aren’t that many organizations which have large numbers of foreign correspondents so you also have to (5) with that aim (6) . Another way of doing it is to work abroad, and work as (7) . That’s somebody who sells stories, and gets paid (8) , to newspapers and magazines and so on. And hoping to (9) that way, and eventually to be offered a (10) .
I don’t really know (11) are needed, but obviously a degree in modern languages or (12) would be very useful. But, a degree in itself probably wouldn’t (13) . It wouldn’t be enough to get you job. It wouldn’t (14) to make an editor decide to (15) . So it’s difficult to define the (16) . You’re going to need (17) and the ability to assimilate information (18) and then produce stories which (19) of the newspaper or radio or television station you (20) .

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单项选择题

油井找窜施工，打压后套压变化大于0.5MPa或溢流量差值大于（），可初步认为窜槽。

A、5L/min

B、10L/min

C、15L/min

D、20L/min

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