Question

Choose the correct option:
Fil
1. Helicopters are able to ....
(i) move straight up
(ii) fly backwards
(iii) hover
(iv) All of the above
When aeroplanes move upward
(1) they must move forward
(ii) they must move sideways
(ii) they must move backwards
(iv) Both (i) and (ii) are correct
3. Helicopters are used in firefighting because
(1) they can reach difficult spots
(ii) they can hover above the fire
(ii) their rotors can put out the fire
(iv) Both (i) and (ii) are correct
4. How are helicopters used as ambulances?
() They chase suspects on the ground.
(ii) They airlift people out of accidents.
(1) They can drop water on fires.
(iv) They lift trees out of forests.
5. Why don't helicopters need runways?
(0) . They can take off without moving forward.
(ii) They can hover in the air.
(ii
) They can fly backwards.
(iv) They are small​

Answer 1

Answer:

1 iii

2 they must move forward

3 iv

4 ii

5 they can take off without moving forward