管家基因(housekeeping gene)

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问题:

管家基因(housekeeping gene)

考点:化学工程基因表达调控基因表达调控题库
题型:名词解释

如图,是A、B、C三种物质的溶解度曲线,根据图回答下列问题.

(1)t3℃时,在三只烧杯中各装入100g水,分别充分溶解A、B、C三种物质,其中溶解最多的物质是______;

(2)在______℃时,分别配制A、B两种物质的等质量的饱和溶液,需要用水的质量相等;

(3)当A中含有少量的B时,可以用______法提纯A.

(4)t4℃时,将A、B、C三种物质的饱和溶液降至t3℃,所得溶液的质量分数由大到小的顺序为______.

题型:名词解释

所谓工程造价的有效控制,具体说就是()。

A.用概算造价控制设计方案的选择

B.用预算造价控制施工图设计方案的选择

C.用投资估算价控制设计方案的选择和初步设计概算造价

D.用修正概算造价控制技术设计方案的选择

题型:名词解释

Four out of ten parents in the UK spend between £100 and £500 on their children’s birthday parties, according to a survey. Four in ten parents of children under 18, who were questioned in a survey, admitted that they felt pressured into organizing more expensive birthday parties for their children than they would like to.

How much parents spend on their children’s birthday parties is one of the most frequently discussed topics on parenting websites. Here is one comment on Mumsnet summing up the thoughts of many parents: “Where we live everyone hires places, entertainers and so on. I don’t want to compare with my rich neighbors, but I want my son to have what all his classmates have.”

The research was carried out on behalf of the children’s charity, Lumos, set up by the author JK Rowling. Just 13 percent of parents spent £50 or less in the past year on their children’s parties.

Many children’s clowns(小丑) or entertainers charge £150 or more for an hour, and parents often feel it necessary to book a special place. Even without these, the cost of plates, the cake and party bags can mount up. Party Pieces, a company set up by Carole and Michael Middleton, charge about £16 for a birthday cake for a party with 16 guests, £22 for table decorations and up to £48 for party bags.

Many children of famous people have increasingly expensive parties, often seen in famous magazines. Suri Cruise, the daughter of actor Tom Cruise and actress Katie Holmes, enjoyed a £100,000 birthday party according to a report.

Georgette Mulheir of Lumos, said,“Parents in the UK are under increasing pressure to spend more and more money on birthday parties for their children and their children’s friends.”

小题1:What’s the main idea of this passage?

A.Children’s birthday parties put their parents under financial pressure in the UK.

B.Many parents are willing to spend more on their children’s birthday parties.

C.Parents pay more and more attention to their children’s birthday parties.

D.Children in the UK hope for more and more expensive birthday parties.小题2: What does the underlined part “mount up” in Paragraph 4 probably mean?

A.Increase.

B.Change.

C.Exist.

D.Count.小题3:By the example of the birthday party for Suri Cruise, the writer probably wants to show that________.

A.famous people love their children very much

B.children of famous people can get whatever they want

C.some children of famous people have really expensive birthday parties

D.holding expensive birthday parties is common nowadays小题4:In which of the following sections would you most probably read this passage?

A.Business

B.Education

C.Science

D.Family

题型:名词解释

法律方法是法律人寻求法律问题的正确答案的专门方法。

题型:名词解释

男女混合双打冠军杯叫做:赫·杜塞克杯。

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