How many cities will have air quality monitoring systems installed by the end of this year?

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问题 How many cities will have air quality monitoring systems installed by the end of this year?

"All large and medium-sized Chinese cities will have greater air quality monitoring by 2010." says a government official. The government has spent 150 million yuan on air quality monitoring systems across China since 2000 when officials began paying great attention to air quality monitoring. More than 220 cities now have air quality monitoring systems and 42 others will have systems in place by the end of this year.

选项 A、42 cities.
B、220 cities.
C、150 cities.
D、262 cities.

答案D

解析

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专业英语四级

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How many cities will have air quality monitoring systems installed by the end of this year?

专业英语四级

InadramaticescalationoftheangerunleashedbytheeconomiccrisisengulfingGreece,communistprotestersstormedtheAcropo

AyearhaspassedsinceChile’s33trappedminerswerehauledtofreedomintheAtacamaDesert.Byandlarge,it’sbeenarelati

Wheredidtheconversationmostprobablytakeplace?

Whathappenedmtheaccident?

HowmuchwasthechangeforsendingaregisteredairmaillettertoLondon?

Iwillownuptomymistakes.Theunderlinedpartmeans______.

Overpopulationposesaterriblethreattothehumanrace.Yetitisprobably______athreattothehumanracethanenvironmental

It’sanannualback-to-schoolroutine.Onemorningyouwavegoodbye,andthat(1)_____eveningyou’reburningthelate-nightoil

NewYear’sresolutionsarethosespeciallittlepromisesyou(1)_____tobelesslikeyourselfandmorelikeother,betterpeople

TVissooftenaparent’sgoodfriend,keepingkidshappilyoccupiedsothegrownupscancookdinner,answerthephone,ortake

患者男，32岁。秋月受风，干咳无痰，咽鼻干燥，恶寒发热，头痛无汗，舌苔薄白少津，脉浮。治疗宜

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根据我国统一会计制度的规定，企业资产负债表的格式是()。

下列属于客户隐私的有()。

不属于工作压力的心理症状的是()

一个悲观的人，把所有的快乐都看成不快乐，好比美酒到充满胆汁的口中也会变苦一样，生命的幸福与困厄，不在于降临的事情本身是苦是乐，而要看我们如何去面对这些事。这段文字意在告诉我们()。

已知α=(3，5，7，9)，β=(一1，5，2，0)，x满足2α+3x=β，则x=_____。

设A为正交矩阵，则下列矩阵中不属于正交矩阵的是()