题目内容

According to the first paragraph, gelatin________.

A. is a protein that can be obtained from animals
B. is harmful to human bodies
C. should not be made into a dessert
D. is lacking in tryptophan and arginine

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All of the students required Professor Hill to________on the French novels he had been reading.

A. command
B. comment
C. compare
D. compel

After children have helped to set the table with impressive accuracy, they________.

A. are able to help parents serve dishes
B. seat themselves and wait for their meals
C. are able to figure out the total pieces
D. can enter a second-grade mathematics class

________from other countries can't work in the United States without a permit.

A. Emigrants
B. Immigrants
C. Migrants
D. Civilians

For wandering bards, it is________to tell the difference between reality and imagi nation.

A. significant
B. unnecessary
C. possible
D. useful

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