单选题:根据下面内容,回答题 When we analyze the salt salinity (盐浓度) of ocean

题目内容:
根据下面内容,回答题
When we analyze the salt salinity (盐浓度) of ocean waters, we find that it varies only slightlyfrom place to place.Nevertheless, some of these small changes are important.There are three basicprocesses that cause a change in oceanic salinity.One of these is the subtraction of water from theocean by means of evaporation.In this manner, the salinity is increased, since the salt stays behind.If this is carried to the extreme, of course, white salt would be left behind ; this, by the way,is how much of the table salt we use is actually obtained.
The opposite of evaporation is precipitation, such as rain, by which water is added to the ocean.Here the ocean is being diluted so that the salinity is decreased.This may occur in areas ofhigh rainfall or in coastal regions where rivers flow into the ocean.Thus salinity may be increased bythe subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation.
Normally, in hot regions where the sun is very strong, the ocean salinity is somewhat higherthan it is in other parts of the world where there is not as much evaporation.similarly, in coastal.
Grandma, who used to live upstairs, is now the voice on long distance, and the working parentis far too beaten down each day to spend evening relaxation time listening to the sandboxexperience of an eager four-year-old.
So family conversation is as extinct as my old toys and parental questions such as "What haveyou been doing, Bobby? "have been replaced by "I 'm busy, go watch television.
And watch TV they do; count them by the millions.
But it's usually not children's television that children watch.Saturday morning, the children'shour, amounts to only about 8 percent of their weekly viewing.
Where are they to be found?Watching adult television, of course, from the Match Game in themorning, to the afternoon at General Hospital, from the muggings and battles on the evening newsright through the family hour and past into Starsky and Hutch.That's where you find our kids, overfive million of them, at 10 p.m., not fewer than a million until after midnight! All of this is donewith parental permission.
Television, used well, can provide enriching experiences for our young people, but we mustuse it with some sense.When the carpet is clean, we turn off the vacuum cleaner.When the dishesare clean, the dishwasher turns itself off.
Not so the television, which is on from the sun in the morning to the moon at night andbeyond!
Parents must exercise some control and show some concern about the cultural influence on thechild when a program not intended for that child is viewed.Parents need to intervene.Noninterventionmay be a wise policy in international affairs, but the results of parental nonintervention will not bewise at alL.
From the first two paragraphs one may infer that the writer's attitude towards
"the olddays" is ______ A.preferring
B.hating
C.being tired of
D.disappointing

参考答案:
答案解析:

下面关于总线的叙述中.不正确的是( )。

下面关于总线的叙述中.不正确的是( )。 A.总线是连接计算机各部件的一根公共信号线 B.总线是计算机中传送信息的公共通路 C.微机的系统总线包括数据总线、控

查看答案

侵犯专利权的诉讼时效是( )年,自专利权人或利害关系人得知或者应当得知侵权行为之日起计算。

侵犯专利权的诉讼时效是( )年,自专利权人或利害关系人得知或者应当得知侵权行为之日起计算。 A.1 B.2 C.3 D.5

查看答案

GDP、GNP、CPl、PPl分别是指( )

GDP、GNP、CPl、PPl分别是指( ) A.国内生产总值、国民生产总值、生产者物价指数、消费物价指数 B.国民生产总值、国内生产总值、生产者物价指数、消

查看答案

唯物辩证法的实质与核心是( )。

唯物辩证法的实质与核心是( )。 A.联系和发展观点 B.对立统一规律 C.质量互变规律 D.否定之否定规律

查看答案

下列各项不属于哲学基本问题的内容是( )。

下列各项不属于哲学基本问题的内容是( )。 A.思维与存在何者为第一性 B.思维能否产生理论 C.思维与存在是否有同一性 D.思维能否正确地反映存在

查看答案