__confidence and the necessaryequipmnt, they failed to rescue the 42 miners trapped in the coal mine.

With the _______, we can choose one icon and click on it for more details.

_______ , sound and video can now be stored on a PC, on the Internet, or using some form of portable storage. Which one of the following is not suitable

In this institution a medal together with a prize of certain sum of money _______ gains success in science and technology every two years.

Calculations，which are astronomically exact，have been made ________ with the use of computers.