皮皮学,免费搜题
登录
搜题
【简答题】
Farmer Ed Rawlings smiles as he looks at his orange trees. The young oranges are growing well in Florida's weather. Warm sunshine and gentle rains, along with Ed Rawlings' expert care, will produce a good crop of oranges this year. But Ed has to fight against Florida's changeable winter weather. In January and February, temperatures can destroy Ed's entire orange, crop. Having farmed in Florida for the past 35 years, Ed Rawlings is prepared for the frosts(霜). When temperatures drop below freezing, Ed tries to save his crop by watering his orange trees. The water freezes and forms a thin layer (层)of ice on the trees. Strange as it may sound, this thin layer of ice actually keeps the fruit warm. What happens is simple. When the trees are watered, the water loses heat and becomes ice. The warmth of the heat it loses is sucked in by the fruit and keeps its temperature at a safe level. Ed Rawlings has effectively used this method(方法)to save many orange crops. But Ed still faces some difficulties. The trees should be watered at the exact moment the temperature drops to the freezing point. Also, just the right quantity of water must be used. Too much water can form a thick layer of ice that will break the trees' branches. Another difficulty is that wind blows away the heat. So Ed has to worry about not only when but also how often his trees should be watered, and how much water should be used. Computer technology may help Ed Rawlings with some of these worries. With equipment, air and soil temperatures and wind speed can be measured. The information is fed into a computer which can tell when temperatures drop to freezing. The computer can correctly decide the quantity of water to be used and how frequently the trees should be watered. Ed Rawlings will find looking after his orange trees a lot easier with the help of a computer, and we'll all have the benefits(or advantages)of computer-age oranges. 1. The passage is mainly about _____ . A.a farmer's expert care for his orange trees B. the different uses of computers C. growing oranges in Florida's changeable weather D. different ways of frost protection 2. Ed tried to protect his crop by _____ . A. using a wind machine to drive away the cold air B. equipping his orange trees with a computer C. watering it at the proper time D. picking his fruit at the first sign of frost 3. In the writer's eyes, computers _____ . A.are too expensive for small farmers B. can be a valuable tool for the farmer C. can be used to help oranges grow bigger D. cannot take the place of the farmer's experience and judgement 4. Which of the following is NOT NECESSARY for Ed Rawlings to do? A. He should water the orange trees as soon as the temperature drops to the freezing point. B. He should decide the quantity of water for the orange trees. C. He has to water the orange trees more often in January and February. D. He has to judge how often he should water the orange trees. 5. According to the passage, the computer technology can _____ . A.get rid of the need for frost protection B. help the farmer get a better harvest C. tell the farmer why outdoor temperature changes D. prevent the temperature from dropping to the freezing point
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】下列( )不是总账系统中凭证类别的限制类型 。
A.
借方必无
B.
凭证必无
C.
借方必有
D.
贷方必有
【简答题】在无限多的微分面中总可以找到三个相互垂直的微分面组成无限小的平行六面体,称为()。
【判断题】【机电-机械】箱式电阻炉的外壳不一定要接地。
A.
正确
B.
错误
【单选题】腺苷脱氨酶可用于下列哪种疾病的诊断和鉴别诊断
A.
化脓性脑膜炎
B.
结核性脑膜炎
C.
病毒性脑膜炎
D.
真菌性脑膜炎
E.
流行性乙型脑炎
【判断题】箱式电阻炉的外壳不一定要接地。()
A.
正确
B.
错误
【单选题】Last year some additional measures to protect customers’ personal information by our company.
A.
are taken
B.
were taken
C.
 have been taken
D.
 will be taken
【单选题】Last year some additional measures _ to protect customers' personal information by our company.
A.
are taken
B.
were taken
C.
have been taken
D.
will be taken
【简答题】下列( )是总账系统中凭证类别的限制类型。 A.借方必无 B.凭证必无 C.借方必有 D.凭证必有A.B.C.D. D
【单选题】可用于结核性脑膜炎的诊断的
A.
谷氨酰胺(glutamine)
B.
腺苷脱氨酶(ADA)
C.
乳酸脱氢酶(LDH)
D.
溶菌酶
E.
天冬氨酸氨基转移酶
【判断题】箱式电阻炉的外壳不一定要接地。( )
A.
正确
B.
错误
相关题目: