In each of the following sentences, select the most appropriate word to complete the statement.(1) Progress, advance, improvement, developmentSince he was injured in the traffic accident last month, his condition has shown definite ______________.
A. progress
B. advance
C. improvement
D. development
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Researchers at the medical school have made steady __________ in cancer prevention and treatment.
A. progress
B. advance
C. improvement
D. development
Qin Nan believes in internship at a law firm will be good for his career __________.
A. progress
B. advance
C. improvement
D. development
Despite changing economic conditions, the computer industry has continued to ___________
A. progress
B. advance
C. improvement
D. development
(2) snap, tap, clap, slapI knew someone was following me through the woods when I heard a twig ________ behind me.
A. snap
B. tap
C. clap
D. slap