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【单选题】
（）最有利于学生的个性发展。A.
必修课程
B.
选修课程
C.
经验课程
D.
综合课程
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反馈参考答案：
举一反三
【单选题】________hard before, Tom is afraid of failing in the exam.
A.
Having been worked
B.
Not to have worked
C.
Having never worked
D.
Never have worked
【单选题】_______ , the girl worked in a hurry.
A.
Having swept the room
B.
Another room swept
C.
Having another room to sweep
D.
Having another room to be swept
【简答题】菌落总数的定义和卫生学意义
【单选题】Having worked for three hours or so they stopped _____ a rest.
A.
taking
B.
to take
C.
having
D.
having taken
【单选题】________ in the company for three years, Mark has become experienced in business negotiations. A) Having worked B) Have been working C) Have worked D) Worked
A.
Having worked
B.
Have been working
C.
Have worked
D.
Worked
【简答题】水菌落总数的定义是:水样在_____培养基上有氧条件下 37 °C培养_____ h 后,所得_____ mL 水样所含菌落的总数。
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