从空气中吸收的污染物的植物，一般( )残留量最大。

What did Belgrade ask the UN administrator to do？

A．To cancel the appointment.

B．To announce the appointment.

C．To block the appointment.

D．To approve the appointment.

What will the Bank of the People do with the donations？

A．They will spend the money on what the sufferers need most.

B．Some of the money will be sent to the administration.

C．They will buy the office supplies they need.

D．They will support the aid agencies and Peruvian government.

What did Allegheny College in Meadville do three years ago？

A．It tried to implement a novel financial aid program.

B．It added $2.5 million to its need-based aid program.

C．It phased out its merit-based scholarships altogether.

D．It cut its merit-based aid to help the needy students.

What did Allegheny College in Meadville do three years ago？

A．It tried to implement a novel financial aid program.

B．It added $2.5 million to its need-based aid program.

C．It phased out its merit-based scholarships altogether.

D．It cut its merit-based aid to help the needy students.

What did the UN call on nations to do about CO2 and other greenhouse gases in 1992？

A．To sign a new climate treaty at Rio．

B．To draft an agreement among UN nations．

C．To force the United Sates to reduce its emissions．

D．To limit the release of CO2 and other gases．

What did the UN call on nations to do about CO2 and other greenhouse gases in 1992？

A．To sign a new climate treaty at Rio.

B．To draft an agreement among UN nations.

C．To force the United Sates to reduce its emissions.

D．To limit the release of CO2 and other gases.

What do rescue agencies and pipeline companies coordinate？

A．Leaks

B．Drilling

C．Emergency readiness

D．Microwave communications

What kind of disease do specialists treat？

Special health problems, such as a ______ disease or a broken eons.

why did the Indonesia's military ask aid groups to do so？

A．Because they didn't believe the aid groups.

B．Because they were worried about the safety of the aid groups.

C．Because some members of the aid groups became the victims of tsunami.

D．Because they wanted to win the support of the tsunami survivors.