People should be able to come to a decision about ions in the air if they

A．note their own reactions.

B．move to a healthier area.

C．observe domestic animals.

D．watch how wealthy people behave.

[单选题]Every deck officer should be able efficiently carry out：（）A . Administration；B . Navigation/Collision Avoidance；C . Conning；D . Above of all.

[单选题]A． ______people come to visit the Great Wall every day.A． large amountB． great deal ofC． good manyD． large quantity

[单选题]A．ccording to Manon, black people should _____.［A］ emerge as free middle class citizens［B］ behave submissively towards the whites［C］ have self-respect in the mixed race marriage［D］ learn to offer more affection to their wives

[试题]Young people should be______(respect)of their elders.

[单选题]People who like dancing can come at____________.A． 7:45 p.m. B. 11:45 a.m. C. 12:15 p.m. D. 2:00 p.m.

[单选题]5．—How many people will come to Shanghai next month?—It's hard to say．_______ people，l think．A． Million ofB． Millions ofC． Three millionsD． Three millions of

[单选题]We should not look down ________ the poor people.A.upon B.at C.to D.of

[单选题]We should not look down ________ the poor people.A.upon B.at C.to D.of

[问答题]Directions: Some people think that alluniversity students should study what

[单选题]To save gas, people should be encouraged to join the car——instead of fining