问题 解答题

如图是某种细胞模式图,请据图回答

(1)此图是______细胞模式图,

(2)图中的[B]______能够控制物质进出细胞.遗传信息库是______,(填写图中字母)

(3)西瓜甘甜可口,主要是因为[E]是______内的细胞液中含有大量糖分.

答案

[A]细胞壁是植物细胞最外层透明的薄壁,具有保护和支持细胞的作用;[B]细胞膜,紧贴细胞壁内侧,非常薄,在光学显微镜下不容易看清楚,起保护作用并控制物质进出的作用;[D]近似球形的细胞核,含有遗传物质DNA,是细胞的控制中心;[F]细胞质,细胞膜以内,细胞核以外的结构,内有[E]液泡,绿色部分有[C]叶绿体,细胞质具有流动性,能加速细胞内、外的物质交换;叶绿体是光合作用的场所,通过光合作用,把细胞内的二氧化碳和水合成有机物,并产生氧,将光能转变为化学能贮存在有机物中;液泡内的细胞液中溶解着多种物质.
(1)此图具有[A]细胞壁、[E]液泡和[C]叶绿体,由此可知此,是植物细胞模式图.

(2)[B]细胞膜紧贴细胞壁内侧,非常薄,在光学显微镜下不容易看清楚,起保护作用并控制物质进出的作用.[D]近似球形的细胞核,含有遗传物质DNA,是细胞的控制中心.

(3)[E]液泡内的细胞液溶解有多种物质,西瓜甘甜可口主要是因为西瓜的细胞液中含有大量糖分.

故答案为:(1)植物;(2)细胞膜; D;(3)液泡.

单项选择题

Questions 6 to 10 are based on the following news.

NEW YORK, the United States

The biggest Wall Street banks slashed their small business loan portfolios by 9% between 2008 and 2009, more than double the rate at which they cut their overall lending, according to a government report released Thursday.

The Congressional Oversight Panel report spotlights the role banks, especially the largest ones, played in the credit crunch that has plagued small companies throughout the recession. "Big banks pulled back on everyone, but they pulled back harder on small businesses," said Elizabeth Warren, the panel’s chairwoman.

Warren’s oversight committee was established to keep tabs on the federal government’s financial stabilization effort. The committee’s May report focuses on the role her committee played in improving credit access for small companies. Madria, spain

The European Union eases trade with Latin America at the Madrid summit. The EU plans to boost trade with Latin America despite warnings from some European ministers and farmers, who fear unfair competition. EU negotiations with the Mereosur trade bloc, frozen since 2004, will reopen. The Mercosur group embraces Argentina, Brazil, Paraguay and Uruguay. Trade deals were also reached with Central America, Peru and Colombia, following marathon talks in Madrid. EU Commission president Jose Manuel Barroso said: "We have opened a ground-breaking chapter in the EU relationship with our Latin America and Caribbean partners. " The EU is pursuing regional trade agreements while global trade talks -- the so- called Doha Round--have failed to make progress.

Tripoli, Libya

Members of a Dutch family are on their way to Libya after being told that the sole survivor of the plane crash that killed 103 people might be their relative. A member of the Dutch family told the media that officials had told her family the child being treated at a hospital in Tripoli might be her grandson, nine-year-old Ruben van Assouw. The Dutch foreign ministry confirmed that two presumed family members of the injured child were on their way to Tripoli. Ruben had been on safari in South Africa with his brother, mother, and father, all of whom perished in the crash, said the newspaper. Sixty-one Dutch citizens were believed killed when the MA Flight 230 from Johannesburg to Tripoli crashed on landing in clear weather at 6 am. The Times understands that seven passengers had been due to fly on to London. Two of the dead were Britons and one was Irish.

London, the United Kingdom

Target Corp posted a higher quarterly profit as consumers loosened their wallets to spend on items including clothing and electronics. The discount retailer said profit was £671 million in the fiscal first quarter that ended May 1, compared with £522 million a year earlier. Target has benefited from consumers becoming a bit more willing to spend on discretionary items such as clothing and home furnishings. The company previously said that sales at stores open at least a year rose 2.8 percent in the first quarter.

Bonn, Germany

Fears of greater financial regulation across Europe hammered stocks on Wednesday after German measures aimed at limiting speculation were taken to smack of desperation.

Stock markets were unnerved by Germany’s unilateral ban on certain naked shorts announced late on Tuesday. And the euro suffered a knee-jerk reaction, falling more than 1 percent against the yen, as investors saw foreign exchange as the only way to bet against the euro zone.

World stocks were down 1.43 percent whilst the more volatile emerging markets index fell 2.64 percent.

There were also fears that the debt crisis was about to worsen as some believed Germany’s move smacked of desperation.

Question No. 6 What did the biggest Wall Street banks do between 2008 and 2009 as reported in the news

6().

A. Lending less money to small businesses.

B. Keeping tabs on financial market stability.

C. Improving credit access for all companies.

D. Spotlighting the role big banks could play in the recession.

判断题