In the last paragraph, what is meant by 'cognitive cost'？

A . Cheer up B . Feed up C . Steer up D . Take up

A.Enrich your experiences by sharing them online. B.Make efforts to make your life attractive to others. C.Stop externalizing your personal experience. D.Record the details of what you see, smell and hear.

A. criminals B. pigeons C. the stolen cars D. demands for money

A．It can make the speaker adjust his speech. B．It can make the speech more informative. C．It may discourage and stop the speaker. D．It may cause the speaker make less eye contact.

A.people should create more natural environment areas B.people would go on protecting national parks C.certain areas of countryside should be preserved D.people should defend the right to live in a peaceful environment

A．temporary balance of powers B．vibration of powers C．dangling of powers D．equality of powers

A.10 pipelines to provide gas. B.10 companies to lay the pipelines. C.10 floating houses to be built on water. D.10 building projects planned and started.

A．We like to change places since we have enough money. B．Both the couple act as a big spender and a cheapskate alternatively. C．We prefer different places to money. D．We move to another place once we have obtained a certain amount of money. 此题为多项选择题。

A．installed. B．used. C．promoted. D．designed

A．A good luck. B．A dirty trick. C．A secret wish. D．A false alarm.

A．clotheslines should be banned in the community. B．clotheslines wouldn't lessen the property values. C．the globe would become warmer and warmer. D．we should protect the environment in the community.

A．Problems. B．Experts. C．Dreams.

A．children tended to compete for the favor of their parents B．children were determined to throw off their immigrant identities C．children were urged to achieve success in the fluid and classless society D．children worked hard for success along paths chosen by their parents

A. Pairing up successful instructions． B. Sending instructions to the robot． C. Generating new sets of instructions for evaluation． D. All the above．

A．Hard training period. B．Transitional period. C．Time for leisure. D．An easy life. 此题为多项选择题。

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A．The course of an action B．A firm or a company C．The exploration of something D．A spirit of working hard 此题为多项选择题。

A．what must be given to someone because it is right or owing B．something one should do or finish before a fixed time C．reasonable explanation(s) orplan(s) D．the money to be paid

A．A.a problem B．B.depression C．C.shame D．D.a disease

A．solution B．speech C．information D．title

A．speech B．solution C．information D．title

A．To prevent. B．To increase. C．To arouse. D．To deepen.

A．find entertainment and information in a library B．read both novels and short stories in a bookstore C．enjoy concerts and films in a theater D．attend many lectures at colleges