Improving energy efficiency can be done quickly.A

What can be done to prevent swine flu？A．Stop touching mouth, nose or eyes.B．Avoid

What can be inferred from the second sentence of the last paragraph？A．Energy parks will be

You can exercise your imagination, but these exercises must be done in accordance with the

Which of the following can NOT be done at the information center？A．Making yourselves free

What can be done to help those affected by autism？A．Early intervention and good educationa

According to the interviewee, what should be done to prevent deaths？A．Improving the techno