题目内容

内源性基因结构突变发生在生殖细胞,可引起哪种疾病

A. 肿瘤
B. 传染病
C. 遗传性疾病
D. 心血管疾病
E. 神经系统疾病

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There are two kinds of goals: short-term goals and _________.

A. long-term goals
B. original goals
C. successful goals
D. big goals

He is a summer_____ in an import&export company.

A. intern
B. internship
C. worker
D. job

I got master ______ in that universty.

A. business
B. degree
C. certificate
D. title

Let's take a ______. We have worked for two hours.

A. sleep
B. seat
C. break
D. stop

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