2  Many firms, for instance, have great difficulty in ______(obtain) technical or scientific books from libraries．(11.11-12)

C  Complete the following sentences using a verb after the words in italics:

1  He was engaged in ______.

2  He was prevented from ______.

3  He insisted on ______.

4  If you persist in ______.

D  Note the position of not in this sentence:

It is a positive advantage to them not to keep them secret．(ll.6-7)

Supply not in each of the following sentences:

1  He told me to mention it to you.

2  Please tell him to call in the morning.

3  Didn't I beg you to write to him?

E  What is the difference between these two sentences:

They are unwilling to enter their names as having taken out such and such a book.

They are unwilling to have their names entered as having taken out such and such a book, (11.12-13)

Write these sentences again using the correct form of have with the verbs in italics:

1  We are going to decorate this room soon.

2  I repaired this watch last year.

3  Will you install the television in this room?

F  Note that in the following sentence we may use the word lest in place of for fear:

Many firms are unwilling to have their names entered as having taken out such and such a book lest (or for fear) the

agents of other firms should be able to trace the kind of research they are likely to be undertaking．(11.1  1-14)

Write two sentences using lest and for fear.

Special difficulties  难点

A  Note the use of fellow in this phrase: ‘with their fellow scientists’ (1.4)．Write three sentences using fellow with the following words: men; students; workers.

B  Write sentences using the following phrases:

in so far as (1.3); often enough (1.4); to such an extent (1.1  1); the whole nature of (1.11).

C  Explain the expressions in italics in the following sentences:

1  In so far as any inquiry is a secret one, it naturally limits all those engaged in carrying it out．(1.3)

2  I think we can carry on without your help.

3  The audience was completely carried away by the wonderful perfomance of the soloist.

4  The government failed to carry through the new bill on housing in the House of Commons last night.

D  What do you understand by the phrase in italics:

They are unwilling to have their names entered as having taken out such and such a book．(11.12-13)

Write a sentence using the phrase such and such.

Multiple choice questions  多项选择题

Choose the correct answers to the following questions.

Comprehension  理解

1  Fear of industrial espionage ______.

a．leads to lack of freedom in scientific research

b．especially applies to scientific research of a general and fundamental nature