According to the man, what does the water purifier remove from the water

A．New techniques are continually developed and new machines invented for undersea exploration.
B．If not well built, a submersible is most likely to get crushed in deep water.
C．A submersible, when manned, looks very like a spaceship.
D．In certain respects undersea exploration is often faced with the same problem as the space exploration.

A．Jabali told a press conference that Israeli army were responsible for the death of the two teenagers.
B．An Israeli army spokesman told reporters that the two teenagers were sentenced to death by the Palestinian Authority.
C．Jabali told reporters that the two teenagers were killed by Israeli soldiers when they were protesting at a death sentence handed down by the Israeli government against a local man for slaying an Israeli policeman.
D．An Israeli police chief Jabali denied his men were responsible for the death of the two teenagers and instead blamed the Palestinian army.