2014年5月托福考试模拟试题及答案(第一套)_第8页

　21.The law of biogenesis is the principle what all living organisms are derived from a

　　A B C

　　parent or parents.

　　D

　　22.Onyx is a mineral that can be recognized its regular and straight parallel bands of

　　A B C

　　white, black, or brown.

　　D

　　23.There are as many as 200 million insects for every human beings, and in fact their

　　A B

　　total number exceeds that of all other animals taken together.

　　C D

　　24.Native to South America and cultivated there for thousands of years, the peanut

　　A B

　　is said to have introduced to North America by early explorers.

　　C D

　　25.Originally canoes were made by the hollowing out of logs and used were for combat

　　A B C

　　as well as transport.

　　D

　　26.Among the symptoms of measles, which takes about twelve days to incubate, are a high

　　A B C

　　fever, swelling of glands in the neck, a cough, and sensitive to light.

　　D

　　27.Ice crystals in a glacier tends to melt and recrystallize within a brief moment of travel

　　A B C D

　　on a downhill glide.

　　28.Photograph was revolutionized in 1851 by the introduction of the collodion process

　　A B C

　　for making glass negatives.

　　D

　　29.The piano is a stringed musical instrument in which the strings are strike by

　　A B C

　　felt-covered hammers controlled by a keyboard.

　　D

　　30.The sounds used in human languages to create meaning consist of small variation in

　　A B

　　air pressure can be sensed by the ear.

　　C D