TOEFL EXERCISES 1

1.   1.   Dinosaurs are classified as reptiles, although some appear to have been warms-blooded

     A                                     B                               C                                         D

Answer : C

Reason : it should be replaced by “some appeared” because ‘are classified’ is a past perfect.

2.     2.  Every fuel has their own particular temperature at which it begins to burn.

                      A                       B                                 C         D

Answer : D

Reason : ‘which’ explained about the things, so after ‘which’ you can’t put ‘it’

3.      3. The hormone insulin controls by the amount of sugar in the blood which

                                            A                         B                     C

provides energy  for the body.

             D

Answer : B

Reason : ‘the amount of sugar’ is wrong, because hormone insulin isn’t being controlled by sugar.

4.      4. Pelican Island in Florida and Oregon Islands in Oregon are wildlife refugees.

            A                 B                         C                                             D

Answer : C

Reason : we have to used “the” before Oregon Island because it’s an adverb

5.      5. When the island of Surtsey was eighteen months old a first leafy green plant appeared

                 A                B                                                  C                D

Answer : C

Reason : because the definite article should be used with an ordinal number.

6.   6.   Octopuses have not only large brains and also a well developed nervous system.

         A                                                B          C           D

Answer : B

Reason : ‘not only’ in pairs with ‘but also’.

7.     7.  Symptoms of mild vitamin C deficiency may be weakness, irritability, losing weight,

                                                                                    A               B                  C

and apathy.

            D

Answer : C

Reason : because it is not parallel with the other items in the series : losing is a gerund whereas the other items are noun.

8.      8. Around 1750, electricity experiments became populartity as entertainment at the court

                              A               B                                 C                    D

of the French King Louis XV.

Answer : B

Reason : ‘popular’ supports the electricity experiments, while ‘popularity’ describes someone or something.

9.    9. In 1780, Italian scientist Luigi Galvani mistaken concluded that frogs’ legs contain

                               A                                   B                                                      C

electricity.

       D

Answer : C

Reason : it should be contains because electricity is also a part of the frog’s legs. Electricity is contained inside the frog’s legs.

110.  Electricity produced by nature is called static electricity because it exerts a forceful

                                          A                      B                                                        C

When it is stationary

                        D

            Answer : C

Reason : It should be force not forceful, because the word force describes the verb that support the word stationary. While forceful is an adjective.