● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

It is generally considered unwise to give a child___( )_____ he or she wants.

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

Project selection methods involve measuring value or attractiveness to the project owner or sponsor and may include other organizational decision criteria （）is not a project selection method.

A c（） sentence contains two or more clauses， one of which is incorporated in the other.

The Shipowner must not stow goods on deck（）there is a trade usage to that effect or the Charterer has given his express or implied consent.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

Do you think your hometown is a good place for the elderly? Why or why not?

Do you think your hometown is a good place for young people? Why or why not?

A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.

If you do not know the subject, you will not understand what is said or written, even if English is your mother （） what is said or written.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。