到距今3000多年前的()时期,水稻种植得到了相当发展。A.修水山背 B.商代吴城文

题型:单项选择题

问题:

到距今3000多年前的()时期,水稻种植得到了相当发展。

A.修水山背

B.商代吴城文化

C.九江神墩

D.樟树樊城堆

考点:百科知识竞赛百科知识竞赛题库
题型:单项选择题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑。选项中有两项为多余选项。

Are you a saver or a spender?

___小题1:___ This old saying calls attention to the wisdom of saving money. "Putting money away for a rainy day" is another way to talk about saving for the future.

People who hate to spend money are known as "tightwads," while those who like to get the most value for their money are called "thrifty." ___小题2:___A spendthrift is someone who spends wastefully. People like that are often said to spend money "like a drunken sailor" or "like there's no tomorrow."

In the United States, people who want to start a savings account have different choices of where to put their money. ___小题3:___ Credit unions are cooperatives for people who have some kind of connection. For example, the members might work for a university or a government agency. Most credit unions are nonprofit organizations.

Credit unions, banks and other financial institutions pay interest on savings accounts. But the interest rates are low. Certificates of deposit(存款)pay higher returns. With a certificate of deposit, or CD, a person agrees not to withdraw the money for a certain period of time. This term could be anywhere from a few months to several years. ___小题4:___ People can withdraw their money early but they have to pay a penalty(罚金).

In a number of countries, people have been saving less over the years. It is reported that in 2000, Americans had a household savings rate of 7%. ___小题5:___ Many European countries have higher rates, but Americans save more than families in Japan.

A.People are willing to save money for the future.

B.A penny saved is a penny earned.

C.Before gold, even kings take off their hats.

D.These include banks and credit unions.E. Longer terms, and larger amounts, pay higher interest.

F. A thrifty person is different from a spendthrift.

G. This year the rate is expected to be a little more than four percent.

题型:单项选择题

无偿献血的血液用途,必须符合以下规定()

A.在保证临床用血的前提下,可以出售给单采血浆站

B.在保证临床用血的前提下,可以出售给血液制品生产单位

C.由血站自主决定

D.必须用于临床

题型:单项选择题

在用RIA检测某种激素在血清中的浓度时,其抗原抗体复合物中的放射性强度越大,表明()

A.该激素在血清中的浓度越高

B.该激素在血清中的浓度越低

C.游离的标记激素的浓度越高

D.对这种激素的特异性抗体浓度越高

E.A+D

题型:单项选择题

一个房间的面积不超过( )m2,且人数不超过( )人时,可设1个安全出口。

A.40,30

B.60,50

C.50,40

D.30,20

题型:单项选择题

机组低负荷摆动大可能有哪些原因?

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