3 a) 11.4.7 Read the text and complete the gaps (1-6) with the correct sentence (A-G). One sentence is extra.

A Until its creation, people had very limited means of telling the time.

B However, the use of the merkhet has been confirmed.

C It is believed that our curiosity first took root in ancient Egypt.

D In fact, it provided such precise measurements that it may even have been used in the construction of the great pyramids at Giza!

E Once the meridian was established, they observed the stars crossing it while rising or setting.

F It was an L-shaped bar made from wood, metal or bone.

G Modern astronomers claim there is still a lot to be learnt from this technology.

b) 11.2.3 Now listen and check. Can you answer your questions in Ex. 2?​