案例分析题 The case history of the twins appears to support the conclusion that （）.

单项选择题The purpose of removing difficult words in the examples is to （）.

A．make them easier to understand
B．provide more useful words
C．introduce more contexts
D．include more examples

单项选择题Many experts do not believe that （）.

A．there are still some problems to work out
B．there will be competition to get popular addresses
C．companies are willing to change their web addresses
D．the change will affect the use of the Internet greatly

单项选择题（4）处应填写（）

A．shrink
B．tighten
C．limit
D．lack

单项选择题According to the passage, the average I.Q. is （）.

A．85
B．100
C．110
D．125

单项选择题What is special about this new dictionary（）

A．It is small and cheap.
B．It has a larger vocabulary.
C．It has 40% more examples.
D．It is designed for students and teachers.

单项选择题Which of the following is one of the problems in using the new system（）

A．Certain characters have several different meanings.
B．Chinese is a truly difficult language to learn.
C．People find it difficult to type their address in characters.
D．Some experts think it is impossible to use Chinese characters.

单项选择题（3）处应填写（）

A．little
B．less
C．more
D．much

单项选择题A word is easier to remember and understand if it is （）.

A．included in a word list
B．pronounced correctly
C．explained in English
D．used in a context

单项选择题The best statement of the main idea of this passage is that （）.

A．human brains differ considerably
B．the brain a person is born with is important in determining his intelligence
C．environment is crucial in determining a person"s intelligence
D．persons having identical brains will have roughly the same intelligence

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