根据下表中的规律,完成后面的填空:序号123456…算式1+12+33+51+7

题型:解答题

问题:

根据下表中的规律,完成后面的填空:
序号123456
算式1+12+33+51+72+93+11
(1)第40个序号的算式是______.
(2)算式为“1+103”的序号是______.
考点:找规律
题型:解答题

交换结构分成两大类()和空分交换。

题型:解答题

阅读理解。

    Sooner or later, many families will face the situation of moving. The experience can be very bad for kids,

who may not be a part of the decision to move and may not understand it. You can take steps to make the

whole process (过程) easier for everyone.

    Many kids like to stay in familiar places. So as you consider a move, weigh the benefits (好处) of that

change against the comfort that neighborhood, school, and social life give your kids. If your family has

recently dealt with a big life change, such as death, you may want to put off a move to give your children

time to accept the fact.

    The decision to move may be out of your hands, perhaps because of a new job or money problems. Even

if you're not happy about the move, try to keep a positive (积极的) attitude to it. During the move, a parent's

attitude can greatly influence kids.

    No matter what the results are, the most important way to prepare kids to move is to talk about it. Try to

give your children as much information about the move as possible. You can ask kids to join in the planning

such as house-hunting or the search for a new school. This can make the change feel less like it's being forced

(被迫) on them. If you're moving across town, try to take your children to visit the new house and the new

neighborhood.

    A move can have many problems, but good things also come from this kind of change. Your family might

grow closer and you may learn more about each other by going through it together.

1. According to the text, a move can be a bad experience for kids because _____. [ ]

A. they may feel they're forced to do so

B. they often feel lonely in a new school

C. they don't like their busy parents

D. they are tired of the moving process

2. In which situation does the author advise to put off a move? [ ]

A. The child's birthday is coming.

B. A family member has died.

C. The new neighborhood isn't safe.

D. The parents have money problems.

3. Which is the most important when making the move easier for children? [ ]

A. Allowing them to choose a school by themselves.

B. Trying not to show them the bad parts of a move.

C. Offering them as much information as possible.

D. Promising to choose a new house with them.

4. The author wrote this text mainly to tell us _____. [ ]

A. what we should do before a move

B. how to prepare children for a move

C. how a move can change the family

D. why parents should talk to children often

题型:解答题

样品中被测物能被定量测定的最低量称为()

A.精密度

B.准确度

C.定量限

D.检测限

E.专属性

题型:解答题

由寒潮关键区经我国新疆、青海、青藏高原东侧南下,影响西北、西南和江南各地,一般强度较弱,该冷空气属于()。

A.东北路

B.西北路

C.北路

D.西路

题型:解答题

档案法的不足是()

A.难以得到充分而足以检验假设的材料,而一些材料也可能包含编者由于偏见所造成的歪曲性内容。

B.工作量大,耗时耗资。

C.分析有赖于分析者抽样的方法和抽象、概括及发现的能力,否则难以得出一般性结论。

D.用相关法得出的结论只能表明两种现象有无关联,却不能说明他们是否为因果关系。

E.它不利于某些假设的检验。

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