It is postulated that a cure for the disease will have been found by the year 2020（　）.

A:challenged B:assumed C:deducted D:decreed

It is {{U}}postulated{{/U}} that a cure for the disease will have been found by the year 2000.

A:challenged B:assumed C:deducted D:decreed

It is {{U}}postulated{{/U}} that population trends have an effect on economic fluctuations.

A:challenged B:assumed C:deducted D:decreed

It is postulated that population trends have an effect on economic fluctuations.

A:challenged B:assumed C:deducted D:decreed

It is postulated that population trends have an effect on economic fluctuations.（　）

A:challenged B:assumed C:deducted D:decreed

It is postulated that a cure for the disease will have been found by the year 2000.

A:challenged B:assumed C:deducted D:decreed

It is postulated that population trends have an effect on economic fluctuations.

A:challenged B:assumed C:deducted D:decreed

It is postulated that a cure for the disease will have been found by the year 2000.（　）

A:challenged B:assumed C:deducted D:decreed