DarkGay

14.09.2020 06:53

Английский язык

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Choose a suitable word given in the brackets to fill in each gap. The laboratory (have\has) its own equipment. It (are\is) equipped with special
laboratory tables besides the demonstration table which stands between the two rows
of tables and in front of (they\them).
In our experiments (us\we) use laboratory vessels and glassware of different
kinds. There (is\are) three groups of them in the laboratory: glassware for general
use, glassware for special use and glassware for measuring. Students (carry out\
carry) experiments using test-tubes, funnels, flasks, retorts, burettes, graduated
cylinders, measuring glasses and pipettes. They also (have\has) microscopes,
analytical balances, distillators, burners to heat solutions and thermometers at hand.
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The most widely available reagents at our laboratory (are\is) acids, alkalis,
oxides, organic salts, indicators.