Reading juice unit 4

The ocean is about 3600 meters ........

• deep

• long

• wide

Scientists know ........ to study the ocean floor.

• how

• who

• what

One famous deep-sea submarine is ........ Alvin

• called

• call

• calls

Alvin can ........ 2 scientists and a pilot.

• swim

• carry

• take

Submarines can -------- 4500 meters deep.

• swim

• go

• dive

Scientists cannot .................. of Alvin

• swim

• go out

• go

Alvin has two big .......

• robot arms

• lgihts

• windows

Alvin has two big .......

• robot arms

• lgihts

• windows

Scientists ........ submarines to study the ocean floor.

• take

• spend

• use

Submarines do a ........ job for us.

• great

• beautifull

• funny