题目
A.give it up because it does no good to waste time by repeating Prior Art.
B.re-uate it to find some new aspects to make further contributions.
C.avail yourself of the ready-made materials and research findings and use them in your own paper.
D.either A or B.
第2题
A.When do you ear dinner
B.When do you ear lunch
C.When do you ear breakfast
第3题
A.When do you do homework
B.When do you do morning exercises
C.When do you go to bed
第4题
A.What do you always do when you have free time
B.What are you doing when you have free time
C.What do you often do when you have free time
第5题
When an alien lives with you in your land, do not _____ (treat) them.
第6题
When you complete Part 1, you will be able to learn().
A. to what do for specific hazards
B. what to do for specific hazards
C. what do for specific hazards
第7题
________ when you cross the road.
A、Do care
B、Care
C、Do be careful
D、To be careful
第9题
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