TOEFL EXERCISE 0

1.      Human brain are more powerful than those of other species because of their complex

         A                                                                                  B                                           C

circuitry.

       D

The correct answer: A

The correct sentence: Human brains are more powerful than those of other species because of their complex circuitry.

Reason: the use of verb “are” is plural so “brains” must be used because it’s a plural noun.

2.      In a person’s lifetime, the brain can store 100 trillion pieces of informations.

                   A                                                  B             C                D

The correct answer: D

The correct sentence: In a person’s lifetime, the brain can store 100 trillion pieces of information.

Reason: the word “information” is an uncountable noun and can’t use as plural.

3.      Under the feathers is a layer of fat that  it protects  the penguin from the cold.

            A                                          B           C                 D

The correct answer: C

The correct sentence: Under the feathers is a layer of fat that protects the penguin from the cold.

Reason: there is no need to use “it” as pronoun.

4.      Despite of  its isolation in the Sunda Strait   between Java and Sumatra, over 36,000

        A                                       B                           C            

people died in the tidal waves following the explosion of Krakatoa.

                               D

The correct answer: A

The correct sentence: In spite of its isolation in the Sunda Strait between Java and Sumatra, over 36,000 people died in the tidal waves following the explosion of Krakatoa.

Reason: The usage of “Despite” is wrong because there is an “of” preposition in which commonly used following by “In spite”.

5.      According experts 60,000  cubic feet of earth was thrown  into the air 

            A                                        B                                           C

in the explosion of  Mount St. Helens.

            D

The correct answer: A

The correct sentence: According to experts 60,000 cubic feet of earth was thrown into the air in the explosion of Mount St. Helens.

Reason: The word “According” must be followed by the preposition “to” and it becomes “According to”

6.      The most  of the energy used in our homes and factories is generated from coal, oil,

       A                 B                                                                                            C     D

and natural gas.

The correct answer: A

The correct sentence: Most of the energy used in our homes and factories is generated from coal, oil, and natural gas.

Reason: The usage of “The” before word “most” is incorrect because uncommonly used.

7.      The new island of Surtsey is its ideal natural laboratory for scientists.

      A                         B                C                                          D

The correct answer: C

The correct sentence: The new island of Surtsey is an ideal natural laboratory for scientists.

Reason: The definite article “an” must replace the word “its”.

8.      The Sahara Desert in Africa is by far the  most large desert in the world, covering an

                                                     A                B                               

 area nearly  as big as the United States.

            C            D

The correct answer: B

The correct sentence: The Sahara Desert in Africa is by far the largest desert in the world, covering an area nearly as big as the United States.

Reason: The superlative word “largest” is must be used because the usage of “most” which describe the word “large” is uncommon.

9.      Computers are machines flexible that can adopt to a wide variety of tasks.

                    A             B                            C                 D

The correct answer: B

The correct sentence: Computers are flexible machines that can adopt to a wide variety of tasks.

Reason: The adjective “flexible” must placed after the noun “machines”.

10.  Diamonds are graded according to weigh, color, and cut.

        A                                                 B         C           D

The correct answer: B

The correct sentence: the verb “weigh” can’t be used and it must replaced by noun, because it’s grammatically incorrect.