小红班上的一盏电灯亮着，小红去把它关掉了，他们班有47人，每人去拉了一下，请问当

用所给动词的适当形式填空。

l. Mr. Brown was disappointed to see the washing machine he had_____ (repair)went wrong again.

2. Children's being addicted to the Internet gets their parents _____ (worry).

3. Many feared that Columbus would fall off the edge of the earth,____ (believe) to be fiat.

4.  _____     (take)his health into consideration, he has to be sent to hospital at once.

5. Mr. Smith,  ____     ( tire ) of the ___ (bore) speech, started to read a novel.

6. The girl let out a  _____ (frighten) voice at the sight of the snake.

7. His____   (frighten) voice scared the boys away.

8. The man is hard to ____     (deal with).

9.It is no use____    (argue) with him.

The kindergartener sat them down to read and paint,________ all the children wanted to do was to make a mess.

A．as

B．then

C．until

D．while

（）属于明文列示的内幕交易行为。

A．发行人在招股说明书中作出虚假陈述

B．证券经营机构将有利的价格留作自营，将不利的价格留给投资者

C．发行人向他人透露内幕信息，使他人利用该信息进行内幕交易

D．证券经营机构以自营帐户为他人或以他人名义为自己买卖证券

焚烧生活垃圾放出的热量用来发电，是综合利用垃圾的一种方法．据资料显示，仅2008年全国城市生活垃圾就达1.5×10⁸t．若燃烧1t垃圾可放出1.5×10¹⁰J的热量，如果将2008年我国的城市生活垃圾全部焚烧，则放出的热量是______J，它相当于______kg煤炭完全燃烧放出的热量（煤炭的热值为3.0×10⁷J/kg）．

板坯在加热过程中容易生成魏氏组织，它是从奥氏体晶界生长出来的近于平行或其他规则排列的针状铁素体或渗碳体加（）组织。