托福模拟试题（二）

Section 2
Structure and Written Expression Time--25 minutes
The Structure and Written expression section is designed to measure your ability to recognize language that is appropriate for standard written English. There are two types of questions in this section, with special directions for each type.
Structure
Directions: Questions 1-15 are incomplete sentences. Beneath each sentence you will see four words or phrases, marked (A), (B), (C),and (D). Choose the one word or phrase that best completes the sentence. Then, on your answer sheet, ifnd the number of the question and fill in the space that orresponds to the letter of the answer you ahve chosen Fill in the space so that the letter inside the oval cannot be seen.
Look at the following examples:
Example I
For many centuries---the principal raw material Sample answer
for making ropes and sails.
(A) then was hemp
(B) the time hemp was
(C) hemp was
(D) hemp
The sentence should read, "For many cenries hemp was the principle raw material for making ropes and sails." Therefore, you should choose (C).
Example II
The sea anemone, a marine animal related to the jelly fish, Sample answer
looks like a plant----like other animal species.
(A) so
(B) rather than
(C) instead
(D) rather not
The sentence should read, "The sea anemone, a marine animal related to the jelly fish, looks like a plant rather than like other animal species." Theerefore, you should choose (D).
Nowbegin work on the questions.
1. Most substances expand when they evaporate so that the density of a substance's gas is---of its liquid.
(A) than the lower density
(B) lower than that
(C) the density is lower than that
(D) the lower the density
2. The process by which nerve cells send signals is --- clearly understood.
(A) none
(B) no
(C) not
(D) nothing
3. Arctic animals--- a means of controlling body temperature in such a cold, barren climate if they are to survive.
(A) need
(B) needing
(C) to need
(D) was needed
4. -----state of California is also known as the "Golden State" because California's hills were once believed to be made of gold.
(A) The
(B) There is a
(C) That the
(D) As the
5. Aspartame is a combination of proteins that is much sweeter----
(A) than sugar does
(B) does cane sugar
(C) cane sugar
(D) than cane sugar
6. Current patterns and topography maps of the seas ---- from satellite photographs.
(A) can be drawn
(B) can drawn
(C) to draw
(D) drawn
7. By the middle of the nioneteenth century, the scientists and engineers in the United States had began to exert --- over technology.
(A) influence worldwide a great
(B) a great worldwide influence
(C) influence a great worldwide
(D) a worldwide influence great
8. ----billions of barrels of oil exist in the vast caverns beneath the Pacific Oceans
(A) It is estimated that
(B) An estimate that
(C) That is estimated
(D) That the estimate
9. The extent of the stimulant effect of coffee on people depends on the circumstances ---- the plants grow.
(A) which
(B) which in
(C) in which
(D) in
10. The guitar solo first ---- as a popular form of musical performance in the twentieth century.