黄曲霉毒素是主要由黄曲霉菌产生的可致癌毒素，其生物合成受多个

【名词&注释】

基因型(genotype)、被子植物(angiosperm)、推土机(bulldozer)、正确对待(acquiring a correct understanding)、衣食住行(mongolian life)、大自然(nature)、表现型(phenotype)、“天人合一”、生物体(organism)、黄曲霉菌(aspergillus flavus)

[单选题]黄曲霉毒素是主要由黄曲霉菌^{(aspergillus flavus)}产生的可致癌毒素，其生物合成受多个基因控制，也受温度、pH等因素影响。下列选项正确的是

A. 环境因子不影响生物体^(organism)的表现型^(phenotype)
B. 不产生黄曲霉毒素菌株的基因型都相同
C. 黄曲霉毒素致癌是表现型^(phenotype)
D. 黄曲霉菌^{(aspergillus flavus)}产生黄曲霉毒素是表现型^(phenotype)

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[单选题]D.My family and I lived across the street from Southway Park since I was four years old. Then just last year they city put a chain link fence around the park and started bulldozing (用推土机推平) the trees and grass to make way for a new apartment complex. When I saw the fence and bulldozers, I asked myself, “Why don’t they just leave it alone?”

A. Looking back, I think what sentenced the part to oblivion (别遗忘) was the drought (旱灾) we had about four years ago. Up until then, Southway Park was a nice green park with plenty of trees and a public swimming pool. My friends and I rollerskated on the sidewalks, climbed the tress, and swam in the pool all the years I was growing up. The park was almost like my own yard. Then the summer I was fifteen the drought came and things changed.
B. There had been almost no rain at all that year. The city stopped watering the park grass. Within a few weeks I found myself living across the street from a huge brown desert. Leaves fell off the part tress, and pretty soon the trees started dying, too. Next, the part swimming pool was closed. The city cut down on the work force that kept the park, and pretty soon it just got too ugly and dirty to enjoy anymore.
C. As the drought lasted into the fall, the part got worse every month. The rubbish piled up or blew across the brown grass. Soon the only people in the park were beggars and other people down on their luck. People said drugs were being sold or traded there now. The part had gotten scary, and my mother told us kids not to go there anymore.
D. The drought finally ended and things seemed to get back to normal, that is, everything but the park. It had gotten into such bad shape that the city just let it stay that way. Then about six months ago I heard that the city was going to “redevelop” certain worn-out areas of the city. It turned out that the city had planned to get rid of the park, sell the land and let someone build rows of apartment buildings on it.
E. The chain-link fencing and bulldozers did their work. Now we live across the street from six rows of apartment building. Each of them is three units high and stretches a block in each direction. The neighborhood has changed without the park. The streets I used to play in are jammed with cars now. Things will never be the same again. Sometimes I wonder, though, what changes another drought would make in the way things are today.
F. 53. How did the writer feel when he saw the fence and bulldozers?
G. Scared.
H. Confused.
I. Upset.
J. Curious.

[单选题]--The weather has been very hot and dry.--Yes. If it had rained even a drop, things would be much better now! And my vegetables____ .

A. wouldn't die
B. didn't die
C. hadn't died
D. wouldn't have died

[单选题]依次填入下面一段文字横线处的语句，衔接最恰当的一组是在21世纪的今天，正确对待任何大自然的关系比以往任何时候都重要。 ， ， ， ； ，结果也受到了大自然的报复。

A. ① 有的国家希望做到“天人合一”
B. ② 人类衣食住行所需的一切资料都取自大自然
C. ③有的国家对待大自然的基本态度是“征服自 然”
D. ④然而，大自然的容忍是有限度的，它是会报复的
E. ⑤他们把大自然看做伙伴，可惜他们的行动没能跟上
F. ⑥从表面看，大自然真的被他们征服了
G. ②③①④⑤⑥
H. ②③⑥④①⑤
I. ③①⑤②④⑥
J. ③④②①⑥⑤

[单选题]依次填入下面一段文字横线处的语句，衔接最恰当的一组是在21世纪的今天，正确对待任何大自然的关系比以往任何时候都重要。 ， ， ， ； ，结果也受到了大自然的报复。

A. ① 有的国家希望做到“天人合一”
B. ② 人类衣食住行所需的一切资料都取自大自然
C. ③有的国家对待大自然的基本态度是“征服自 然”
D. ④然而，大自然的容忍是有限度的，它是会报复的
E. ⑤他们把大自然看做伙伴，可惜他们的行动没能跟上
F. ⑥从表面看，大自然真的被他们征服了
G. ②③①④⑤⑥
H. ②③⑥④①⑤
I. ③①⑤②④⑥
J. ③④②①⑥⑤

[单选题]被子植物的下列性状哪一个较进化?( )。

A. 两性花
B. 虫媒花
C. 木本
D. 单被花

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