IV. Answer the questions:
1. What is thediameter of the earth?
2. Is it easy to define chemical elements?
3. Is it easy to define the rocks of which the earth is made?
4. What can you say about the origin of the earth?
5. What do the geologists mean when they talk of the earth as a ball of rock?
V. Pronounce the following words and translate:
Enormous [i`nͻ:məs], scarcely [skεəsli], diameter [dai‘ æmitə], equator [i‘kweitə], sphere [sfiə],
southern [sʌðən], lead [li:d], hydrogen [haidridʒən], molecule [mͻlikju:l], nitrogen [naitridʒən],
dioxide [dai‘ͻksaid], vague [veig], precious [pre∫əs], acid [æsid],
structure ['strʌkt∫ə], thorium ['θͻ:riəm].
Do'stlaringiz bilan baham: |