Which of the following statements is supported in this passage（） A: 50% of the US population forgot to wear safety belt every day. B: The first safety belts in cars appeared forty years ago. C: Safety belts "trap" people in cars that are burning or sinking in water. D: Not wearing safety belts will be fined.

Unfortunately belts are worn only by ________ percent of drivers and passengers in cities.

Seat belts: remain -1- while the “Fasten seatbelts” sign is on

Passengers must fasten their seat belts during take-off or landing.

We were told to fasten our seat belts before the plane took off.

Please fasten your seat belts for _______ _______（起飞）. A: took B: take C: of D: off

Please fasten your seat belts for _______ _______（起飞）. A: take B: away C: off D: up

Iron ore can’t commonly be loaded with___. A: conveyor belts B: grabs C: chutes D: slings

Special care must be taken in checking the seat belts of certain types of passengers, especially the elderly, handicapped passengers and others.

What is David looking for? A: long sleeve thermal underwear B: belts and scarves, C: bras and laces D: socks and leggings