A.He wonders if he'll have enough time to do the job.
B.He is afraid he won't know enough to do the job well.
C.He fears that the job may be too boring.
D.He thinks Professor Jamison has someone else in mind.
第7题
咽鼓管开口于
A. 鼓室的后壁
B. 鼓室的前壁
C. 鼓室的外侧壁
D. 鼓室的内侧壁
E. 鼓室的上壁
第8题
乳突窦【鼓窦)开口于
A. 鼓室的后壁
B. 鼓室的前壁
C. 鼓室的外侧壁
D. 鼓室的内侧壁
E. 鼓室的上壁
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