托福阅读历年真题精选32_第2页

3,Which of the following questions did the theory of spontaneous generation attempt to answer?

(a)What is the origin of the living organisms are seen on some food?

(b)How many types of organisms can be found on food?

(c)What is the most effective way to prepare living organisms for microscopic examination?

(d)How long can food stand before it putrefies?

4,The word “resemble” in line 9 is closest in meaning to

(a)benefit from

(b)appear similar to

(c)join together with

(d)grow from

5,The purpose of the “guncotton” mentioned in paragraph 2 was to

(a)trap particles for analysis

(b)slow the process of putrefaction

(c)increase the airflow to the microscopic slide

(d)aid the mixing of alcohol and ether

6,The author mention “1.0mm”in line 14 in describing the

(a)thickness of a layer of organisms that was deposited on an object

(b)diameter of the fibers that were in the guncotton filters

(c)thickness of the microscope slides that were used

(d)size of the particles that that were collected

 

7.The word “postulated”in line 19 is closest in meaning to

(a)analyzed

(b)doubted

(c)persuaded

(d)suggested

8.The objects that Pasteut removed from the air in his experiment were remarkable because they were

(a)primarily single-celled organisms

(b)no different from objects found in putrefying materials

(c)fairly rare

(d)able to live in a mixture of alcohol and ether

9.The word “it” in line 22 refers to

(a)a nutrient solution

(b)a glass flask

(c)boiling

(d)spontaneous generation

10.According to paragraph 3,proponents of spontaneous generation believed that which of the following was important for the process to succeed ?

(a)A sealed container

(b)Fresh air

(c)Heat

(d)The presence of nutrients

11.It can be inferred from paragraph 3 that Pasteur employed a swam-necked flask to

(a)store sterilized liquids for use in future experiments

(b)prevent heat from building up in a solution

(c)disprove a criticism of his conclusions

(d)estimate the number of organisms in a liter of air