A

\(\dfrac{1\times2\times3\times4\times5}{2\times3\times4\times5\times6}=\dfrac{1}{6}\)

 => If you turn off all the lights, you will not pay more money.

Choose the word which has a different stress pattern from the others.

1. A. malnutrition           B. supersonic        C. underwater         D. intelligent

2. A. homeless              B. describe            C. skyscraper            D. violence

3. A. another             B. plentiful                  C. dangerous     D. limited

1. I wish I hadn't spent so much money on clothes.

2. Football is said to be the best game to play.

3. Tom thanked me for helping him.

4. It is a three-hour drive from Haiphong to Hanoi.

\(x\times\dfrac{1}{2}=\dfrac{15}{4}-\dfrac{4}{3}\)

\(x\times\dfrac{1}{2}=\dfrac{29}{12}\)

\(x=\dfrac{29}{12}:\dfrac{1}{2}\)

\(x=\dfrac{29}{12}\times2\)

\(x=\dfrac{29}{6}\)

372.1 : 100 = 3.721                          79.5 : 1000 = 0.0795

63.2 :10 = 6.32                                 0.25 : 100 = 0.0025

24.83 : 100 = 0.2483                         8.7 : 1000 = 0.0087

a 49-31+16=34

b 507-159-59=289

c 211+302-113-97=303

d 937-236-112-135=454

\(\dfrac{1}{2}\times\dfrac{8}{5}+x=\dfrac{14}{3}\)

\(\dfrac{4}{5}+x=\dfrac{14}{3}\)

\(x=\dfrac{14}{3}-\dfrac{4}{5}\)

\(x=\dfrac{70}{15}-\dfrac{12}{15}\)

\(x=\dfrac{58}{15}\)

-/I:/: cheap, see, meal, convenient, sea, village, peace, beach, police, sleepy, leave, teen, street.

-/I/: slim, noisy, thing, exciting, busy, histories, river, friendly, sit, milk, city.