未分类题

左右两侧相应的内容配对：位置和形态器官和结构 A．晶状体和视网膜之间的胶状物 a．角膜 B．晶状体与虹膜之间充满水样液的小室 b．视网膜 C．巩膜延伸的透明部分 c．眼后房 D．分布有视锥和视杆细胞 d．玻璃体

A.晶状体和视网膜之间的胶状物
B.角膜
C.晶状体与虹膜之间充满水样液的小室
D.视网膜
E.巩膜延伸的透明部分
F.眼后房
G.分布有视锥和视杆细胞
H.玻璃体

【参考答案】

A—d B—c C—a D—b
A—dB—cC—aD—b

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根据短文回答第 51 题题。 Child Consultants These days,'What do you want to do when you grow up?' is the wrong question to ask children in the USA．The________ (51) should be:'what job are you doing now?'American companies are employing more and more young people as consultants to evaluate products for child________ (52).The 12-to-19________ (53)group spends more than$1 00 billion a year in the USA．Specialist agencies have been createdto help manufacturers ask kids about all the latest trends in clothes,food and________ (54)markets.One________(55),Teenage Research Unlimited,has panels(评判小组)of teenagers who give their verdict(裁决)on products ________ (56)jeans(牛仔裤).Another company, Doyle Research Associated,holds two.hour sessions in a room________(57)the'imaginarium(想象室)'Children are encouraged to play games to get________(58)a creative mood.They have to write down any ideas that--(59)into their heads.Some manufacturers prefer to do their own________ (60)research.The software company Microsoft runs a weekly' Kid's Council' at its headquarter in Seattle, ________ (61)a panel of school children give their verdict on the________ (62)products and suggest new ones.One 11-year-old,Andrew Cooledge,told them that they should make more computer games which would appeal equally--(63)boys and girls.Payments for the work are increasingly attractive.Andrew Cooledge was paid $250 and given some software.________ (64),even if their ideas are valuable,tile children will never make a fortune.They cannot have the copyright to their ideas.These are not jobs they can hold for long.________ (65)their mid-teens they can be told that they are too old. 第 51 题A．sentenceB．wordC．answerD．question

A.The________
B.The
C.Specialist
D.One________(55),Teenage
E.Another
F.hour
G.They
H.
Some
I.The
J.One
K.Payments
L.Andrew
M.________
N.They
O.These
P.________
Q.sentence
B．word
C．answer
D．question

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叙述IEEE 802.3以太网采用的介质访问控制协议的工作原理。

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