The train is running _____the speed of 200 kilometers per hour.
| A．with | B．at | C．in | D．For |
--The air pollution is terrible.
--It will be worse_______ we take action to protect the environment.
| A．if | B．unless | C．until | D．when |
--Which of the two sweaters will you take?
--I’ll take _____. They look nearly the same, and I just need one.
| A．both | B．either | C．none | D．all |
--More and more people come to visit Houyi Park.
--That’s true. It has become the ______of Sheyang.
| A．pride | B．praise | C．proud | D．courage |
I hope the train will arrive on time, but it’s _______my control.
| A．within | B．without | C．under | D．Beyond |
We can live a better life if we create ______less polluted world.
| A． a | B．an | C．\ | D．the |