Единственное и множественное число существительных

I. Заполните пропуски нужной формой глагола to be.

1. Alumni of the university ______ invited to the graduation ceremony.
2. These bacteria _______being studied by university scientists.
3. The criteria for promotion ________ clearly stated.
4. The appendices ________ usually found at the back of a book.
5. Supernatural phenomena ______ of great interest to many people.
6. The hypothesis _______ supported by the data.
7.  

II. Выберите правильный вариант числа существительного.

1. Data / datum speak in favour of this theory.
2. This hydrolysis / hydrolyses is taken to follow the above scheme.
3. Conclusive proof for the dioxane structure of IV was acquired through an independent synthesis / syntheses.
4. This thesis / theses holds for more general cases of isomerism.
5. The free proton resembles an-a particle in that it consists of a nuclei / nucleus without planetary electrons.
6. As long as the barrier to internal rotation is not too low, the molecule will remain in one of these minimum / minima.
7. The motion of a valency electron in its orbital is equivalent to the flow of a current in the loci / locus of its motion.
8. The equation will now be derived on a statistical basis / bases.
9. We still have a long way to go before we can claim to have solved the problem of sexuality in bacterium / bacteria.
10. The equilibrium constant was found to equal 0.232 and the data to fit more accurately into a formulae / formula.
11. This value may be subject to refinement when analysis / analyses are complete.

III. Заполните пропуски в предложениях словами из предложенного списка.

Каждое слово используется дважды в каждой паре предложений, один раз в форме единственного числа, а другой раз - в форме множественного числа.

Это упражнение напоминает о том, что неисчисляемое существительное, если оно принимает окончание -s, приобретает другое значение.

1. Under the _________ of the contract, you are obliged to repay the loan within two years.
2. The car was a reasonable price, but wasn't in good _______
3. It has been an ______ to work with you. I've been very proud of what we've achieved together.
4. She has an _______ degree in geography. I have a terrible ______ at the back of my neck.
5. He took great ______ to ensure his quests' stay was pleasant
6. After the accident, it took her a long time to come to _______ with the fact that she would never dance again. During his first _______ of office, the Prime Minister made many sensible decisions.
7. We need a person with relevant ________ to fill the post. He wrote a book about his _______ whilst crossing Africa on foot.
8. The Vicar was a kind man, and did a lot of _______ during his life. There is a wide range of electrical _______ on sale in our village shop.
9. The day return fare is only $12 – a __________ of $8 on the full fare. Mrs Higgins' house was broken into the other day, and all her _______ were taken.
10. Officers don't live with ordinary soldiers. Their _______ are usually separate and more luxurious. Interest rates have risen to 8.25 per cent, a rise of a _______ of a per cent.
11. For some reason, he was ashamed of his working class background, and went to great ______ to conceal the fact. I can only swim one _______ of the swimming pool before I get tired.
12. Don't sit on the grass. The _______ is still very wet. I trust John. I have good _______ for believing his version of events.
13. The storm caused a lot of ________ . She was awarded four thousand pounds' ________ in the libel case.
14. Two _______ were seen running away from the scene of the crime. _________ has always been the time for rebellion.