单项选择题

Which of the following statements is NOT true of ECT

A．ECT came into being long time ago.
B．ECT may cause the self protection of the brain.
C．ECT is employed as treatment of a certain disease.
D．ECT was used to control those who lost their will.

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单项选择题

The book Work force Crisis aims to change a corporate practice because ______.

A．it is bad for the development of a corporation.
B．many corporate employees are growing old.
C．it has called forth a lot of criticism.
D．many corporate employers have realized its problem.

单项选择题

The word ephemeral in the first paragraph probably means ______.

A．well-known.
B．longlasting.
C．short-lived.
D．international.