1957:The launch of (6) _____________________.
A.
B.
C.
D.

Plastic parts have made _____________________ as much as fifty per cent more efficient since the 1970s.
A.
B.
C.
D.

Experts have calculated that a kilo of plastic packaging can lead to a reduction of _______________kilos in wasted food.
A.
B.
C.
D.

 The use of plastics in major appliances ensures that they will _____________________ corrosion.
A.
B.
C.
D.

Meat and other food products are wrapped in plastic to protect them from _____________________.
A.
B.
C.
D.

 According to the speaker, the three factors contributing to the success of plastics today are safety,_____________ and _____________________.
A.
B.
C.
D.

When is there a late night opening?
A.
B.
C.
D.

Who can give you advice?
A.
B.
C.
D.

(8)

'New York City Experiment': garbage collected in plastic bags.
A.
B.
C.
D.

1973:(9) _____________________ first manufactured commercially.
A.
B.
C.
D.