内部会计监督的对象是()。A.本单位的会计人员 B.本单位的经济活动 C本单位的会计

I often heard birds _____ in the tree in front of my house before. [ ]

A. sang

B. sing

C. singing

北京2008年第29届奥运会火炬是以符合环保要求的丙烷（C₃H₈）为燃料。请填写下列空格：

（1）丙烷的相对分子质量是__________

（2）丙烷分子中碳原子、氢原子的个数比是___________

（3）含有16g氢元素的丙烷质量是____________

门式钢管脚手架采用刚性连墙件时，每一连墙件的（）不应低于10kN。

A、拉力标准值

B、压力标准值

C、承载力标准值

D、应力标准值

何为气蚀现象？

阅读理解。

     You are from a middle-class family, and live in a normal-size home without any showy possessions, but

you are worried that he will want to live as they do, and wonder if you should move.

     Sometimes big pocket money, joyful birthday parties, special playrooms and super-big houses tell you that

your neighbors probably have more money than you do, and that they're not as careful as you are with money,

but you may.

     Find that they cook and dig in the garden with their children just as often as you do, talk with them as freely

and read to them every night.

     Or you may find that some of these parents stay in one wing of their big house while their child plays by

himself, way off in a wing of his own. In that unfortunate case, he is basically growing up alone without being

looked after properly, but this can happen to a child who lives in a normal-size house, too, if he has a TV, a

computer and a few video games in his room. Even the most caring parent doesn't walk in and out of it to see

what show her child is watching, what Internet site he has found and if he's still playing that video game.

     Too much uncontrolled screen time may lead to a certain loss of innocence (天真), but mostly this child

will lose the sense of unity and satisfaction that comes from being in a family.

     A neighborhood should also provide you with a sense of unity and satisfaction, and if it doesn't, you might

decide to move. Don't judge your neighborhood too harshly (严厉地), though. There are some things that are

right with almost any neighborhood and some things that are wrong with the best of them-like those super-big

houses. The wealth of their owners-and the way they throw money around-may make your son feel sorry for

himself, unless you help him understand that you and his dad save some of the money, give some to people

who don't have enough and use the rest to pay for whatever the family needs.

     Children want-should be provided with-explanations when their parents don't give them what they want.

1. What is the problem with the worried parent in the text?

A. Her house isn't as big as her rich neighbors'.

B. Her son is left alone without anyone in charge.

C. She cannot provide her son with a special playroom.

D. She worried about the effect of her neighbors on her son.

2. In paragraphs 2 and 3, the author seems to agree that parents should _____.

A. spend more time with their children

B. give their children more freedom

C. work hard to lead a richer life

D. set an example for their children to follow

3. By saying "throw money around" (paragraph5), the author means that rich people ______.

A. spend money carelessly

B. save money for their children

C. help the poor people willingly

D. leave money all round the house

4. What is the main idea the author aims to express in the text?

A. Children are unfortunate to have poor parents.

B. Children should enjoy their comfortable life.

C. Children need proper guidance from their parents.

D. Children feel ashamed of themselves in a rich neighborhood.