单选

Implied but not stated is that__________．

A.laser—doppler radar ismore accurate than microwave radar
B.microwave radar operatesat a higher frequency than laser—doppler radar
C.the light—beam radar canmeasure only slow speeds with accuracy
D.microwave radar may notensure absolute precision in measuring varying speeds

试题出自试卷《成人高考专升本《英语》全真模拟试卷(7)》

参考答案

查看试卷详情

相关试题

For thispart，you areallowed 20 minutes to write a short composition of about100—120 words on thetitle：My Most Favourite Programme．Base your composition onthe outline given below in Chinese：
1．今天，电视和收音机给我们提供许多值得看的节目。
2．新闻节目告诉我们每天国内外发生的事。
3．作为一个大学生，我……
点击查看答案
__________
点击查看答案
__________
点击查看答案
__________
点击查看答案
__________
点击查看答案
回答下列各题：
A．I will take it．
B．How much is it?
C．What can I do for you?
D．Which one do you like?
E．Let me help you．
F．How many ones do you want?
G．Here you are．
H：Thank you so much!
(S=Shopkeeper，P=Peter)
S： ___56___
P：I want to buy a notebook．
S：The notebooks are overtllere．___57___
P：The blue onelooks nice． ___58___
S：Two yuan．
P：That’s all right．___59___
S： ___60___
P：Thank you．
__________
点击查看答案
The author says that he is a naturalist ratherthan a scientist probably because he thinks he________．
- A.comes up with solutions ina most natural way
- B.lacks some of thequalities required of a scientist
- C.just reads about otherpeople’s observations and discoveries
- D.has a great deal oftrouble doing mental arithmetic
点击查看答案
It can he inferred from the passage thatthe author was________．
- A.no more than a bornnaturalist
- B.a naturalist but not ascientist
- C.a scientist as well as anaturalist
- D.first of all a scientist
点击查看答案
The first paragraph tells us theauthor________．
- A.was born to a naturalistsfamily
- B.didn’t like his brothersand sisters
- C.lost his hearing when hewas a child
- D.was interested in flowersand insects in his childhood
点击查看答案
回答下列各题：
Looking back on my childhood，I am convinced thatnaturalists are born and not made．Al-though we werebwught up in the same way，my bwthers and sisters soonabandoned theirpressed flowers and insects．Unlike them，I had no ear for music and languages．I wasnot anearly reader and I could not do mental arithmetic．
Before World War I we spent our summerholidays in Hungary．I have only the dim memry 0f tlle house we lived in，of my room and my toys．Nor do I recallclearly the large family ofgrandparents，aunts，uncles and cousins who gathered next door．ButI do have a crystalclearmemory of the dogs，the farmanimals，the local birds，andabove all，the insects．
I am a naturalist，not a scientist．I have a strong love of the natural world and my enthusiasmhad ledme into varied investigations．I love discussing myfavorite topics and enjoy burning themidnight oil while reading about otherpeople’s observations and discoveries．Then somethinghap-pens that brings these observations together in my conscious mind．Suddenly you fancy you flee theanswer to the riddie，because it all seems to fit together．Thishas resulted in my publishing 300 -pets，and books，which some might honour with the title of scientific research．
But curiosity，a keen eye，a goodmemory and enjoyment of the animal and plant world donot make a scientist：one the outstanding and essential qualities required isself-discipline，aquality I lack．A scientist requires not only self-discipline but hard training，determination anda goal．A scientist，up to a point，can be made．A naturalist is born．If you can combinethetwo，you get the best of both wodds．
The author can’t remember his relativesclearly because_________．
- A.he was too young when helived with them
- B.he was fully occupied withobserving nature．
- C.he didn’t live very longwith them
- D.the family was extremelylarge
点击查看答案