A．human brains differ considerablyB．the brain a person ……

单项选择题The new system will allow the suffix of a Web address to be expressed by （）.

A．any native language
B．figures and numbers
C．Chinese characters
D．symbols and signs

单项选择题（2）处应填写（）

A．spread
B．speed
C．spur
D．sponsor

填空题What kind of product is advertised in the passage（）

单项选择题The aim of the author in producing this new dictionary is to （）.

A．correct mistakes in the old dictionary
B．make it more helpful for students
C．increase the number of words
D．add pictures and photos

单项选择题This selection can best he titled （）.

A．Measuring Your Intelligence
B．Intelligence and Environment
C．The Case of Peter and Mark
D．How the Brain Influences Intelligence

单项选择题The approval of the use of 16 languages by ICANN will allow web users to （）

A．change their email address
B．email their messages in characters
C．have the chance to learn other languages
D．use addresses in their own language

单项选择题（1）处应填写（）

A．among
B．within
C．on
D．towards

单项选择题For Web addresses, Chinese speakers now have to use （）.

A．pinyin
B．signs
C．numbers
D．characters

单项选择题His marked personality changes were ______ by a series of unfortunate events.

单项选择题It would be ______ a risk to let the child go to school by himself.