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问题 单项选择题

一个孩子晚上上床有哭闹行为，他的父母就到他的房间给予安慰，结果这个孩子上床睡觉前的哭闹更频繁。孩子哭闹行为的增加是（）行为学习机制。

A.正强化

B.负强化

C.消退

D.惩罚

答案

参考答案：A

解析：父母的安慰充当了孩子哭闹的正性强化物。

阅读理解

阅读理解。

     Hello, nice to meet you. I am Jack. I am a student. I am in Class 5, Grade 4. There are forty-five 

students in my class. Now, it's 10:00. It's time for English class. I like our English teacher. His office

 is on the first floor. He is a young man. He wears blue sweater and jeans today. I like blue and I have

 a blue sweater, too. What colour do you like?

1. Jack is a _____.            

A. student     

B. teacher     

C. English teacher   

2. What time is it for English class?       

A. Nine o'clock  

B. Ten o'clock   

C. Eight o'clock

3. How many students are there in Jack's class?          

A. 50           

B. 55           

C. 45  

4. Jack's English teacher is a _____.                     

A. young man       

B. young girl        

C. young woman   

5. What colour does Jack like?         

A. Red         

B. White        

C. Blue

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单项选择题

Even plants can run a fever, especially when they are under attack by insects or disease. But (1) humans, plants can have their temperature (2) from 3,000 feet away—straight up. A decade ago, (3) the infrared scanning technology developed for military purpose and other satellites, physicist Stephen Paley (4) a quick way to take the temperature of crops to determine (5) ones are under stress. The goal was to let farmer (6) target pesticide spraying (7) rain poison on a whole field, which (8) include plants that don’t have the pest problem.

Even better, Paley’s Remote Scanning Services Company could detect crop problem before they became (9) to the eye. Mounted on a plane flown at 3,000 feet (10) , an infrared scanner measured the heat emitted by crops. The data were (11) into a color-coded map showing (12) plants were running "fevers". Farmers could then spot spray, using 50 to 70 percent less pesticide than they (13) would.

The bad news is that Paley’s company closed down in 1984, after only three years. Farmers (14) the new technology and long-term backers were hard (15) . But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to (16) into operation. Agriculture experts have no doubt about the technology works. "This technique can be used (17) 75 percent of agricultural land in the United States," says George Oerther of Texas A＆M. Ray Jackson, who recently retired from the Department of Agriculture, thinks (18) infrared crop scanning could be adopted by the end of the decade. But (19) Paley finds the financial backing (20) he failed to obtain 10 years ago.

6（）

A.precisely

B.extraordinarily

C.exceedingly

D.extremely
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