M01 laws tm4 5700. indd

(page 247)
NR 3. 
The sun, which in 40 minutes can 
produce enough solar energy to meet 
humankind’s needs for a year, is one of 
Earth’s potential sources of power.
R 4. 
We are at the beginning of a medical 
computer revolution, according to an 
article that appeared online.
R 5. 
A medical computer is a machine that 
analyzes the results of laboratory tests 
and electrocardiograms.
R 6. 
A physician who feeds a patient’s 
symptoms into a computer receives a list 
of diseases that fit the symptoms of that 
patient.
NR 7. 
Laser beams, which are useful in 
both medicine and industry, were first 
predicted in science fiction stories 
75 years ago.
R, NR 8. 
According to the International Monetary 
Fund, the country that has the highest 
per capita income is not the United 
States, which is in fourth place.
R 9. 
It was a thrilling experience to meet 
the author of the book that we had been 
reading all semester.
NR 10. 
My brother-in-law, who is from Italy, 
moves his hands a lot when he is talking.
PRACTICE 2: Using Relative Pronouns 
as Subjects 
(page 248)
A 
Answers will vary. Possible answers include:
 2. 
While he lectured, he showed us a slide that 
diagrammed the double helix structure of DNA.
 3. 
Words in English that begin with the 
consonants th are often difficult for foreigners 
to pronounce.
 4. 
Foreigners also have difficulty with English 
spelling, which is not always consistent with 
its pronunciation.
 5. 
Anyone who wants to be a computer 
programmer must have a logical mind.
 6. 
Fans quickly lose interest in a sports team that 
loses game after game.
Longman Academic Writing Series 4, Fifth Edition, Teacher’s Manual 
●
Student Book Answer Key