问题 单项选择题

专家“为转基因玉米进行平反”时指出了批判者的错误,下列内容属于批判者的错误的一项是:

A.实验的过程无法得出实验结论。

B.实验脱离客观环境

C.实验采用的对象不对

D.将实验室中的花粉浓度等同于大田里的花粉浓度。

答案

参考答案:A

解析:(这里的批评者指的是美国康奈尔大学昆虫学家,而他们在实验室中的研究是有结果的,这一结果就是“放养在抹有BT转基因玉米花粉的苦苣菜叶上的金斑蝶毛虫发育缓慢,摄食量少,体重只是正常毛虫的一半,且死亡率高”。)

填空题
完形填空
完形填空。
     When Dave was eighteen, he bought a secondhand car for $200 so that he could travel to
and from work more____1____ than by bus. It worked quite well for a few years, but then it
got so old, and it was costing him so much in repairs that he decided that he had better ___2___it.
     He asked among his friends to see if anyone was particularly___ 3___ to buy a cheap car,
but they all knew that it was falling to pieces, so none of them had any desire to buy it. Dave's
friend Sam saw that he was ___4___ when they met one evening, and said, "What's up, Dave?"
Dave told him, and Sam answered, "Well, what about advertising it in the paper? You may
___5___ more for it that way than the cost of the advertisement!" Thinking that Sam's
___6___ was sensible(合理的), he put an advertisement in an evening paper, which read "For
sale: small car, uses very little petrol, only two owners. Bargain at 50."
     For two days after the advertisement first appeared, there was no ___7___. But then on
Saturday evening he had an enquiry. A man rang up and said he would like to___8___him
about the car. "All right," Dave said, feeling happy. He asked the man whether ten o'clock the
next morning would be___9___or not. "Fine," the man said, "and I'll ___10___my wife. We
intend to go for a ride in it to ___11___ it."
     The next morning, at a quarter to ten, Dave parked the car in the square outside his front door,
___12___ to wait there for the people who had ___13___ his advertisement. Even Dave had
to ___14___ that the car really looked like a wreck(残骸).Then, soon after he had got the car
as clean as it could be, a police car stopped just behind him and a policeman got out. He looked
at Dave's car and then said, "Have you reported this ___15___ to us yet, sir?"
( )1.A.directly
( )2.A.keep
( )3.A.anxious
( )4.A.delighted
( )5.A.learn
( )6.A.message
( )7.A.doubt
( )8.A.tell
( )9.A.exact
( )10.A.follow
( )11.A.recognize
( )12.A.happening
( )13.A.read
( )14.A.forget
( )15.A.bargain

B.safely
B.repair
B.lucky
B.upset
B.miss
B.advice
B.help
B.see
B.suitable
B.meet
B.gain
B.meaning
B.inserted
B.show
B.sale

C.properly
C.sell
C.ashamed
C.calm
C.get
C.request
C.trouble
C.agree
C.early
C.bring
C.admire
C.turning
C.answered
C.disagree
C.accident

D.easily
D.throw
D.generous
D.astonished
D.find
D.description
D.reply
D.call
D.late
D.introduce
D.test
D.failing
D.placed
D.admit
D.result