题目内容

Genetially modified ______plants may dominate other plants.

A. corn
B. tomato
C. strawberry

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Genetially modified ______plants may kill butterflies.

A. corn
B. tomato
C. strawberry

Genetially modified ______plants have genes from a fish.

A. corn
B. tomato
C. strawberry

Boarding usually happens _____ minutes before scheduled departure.

A. 30
B. 60
C. 90
D. 120

About two hours prior to takeoff, the gate attendant will announce the boarding time.

A. 对
B. 错