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【单选题】
在进度计划实施中，若某工作的进度偏差小于或等于该工作的(50)，此偏差将不会影响总工期。A.
自由时差
B.
紧前工作最迟完成时间
C.
总时差
D.
紧后工作最早开始时间
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】—Look at the picture, how many students ride to school in the class? —Oh, there are _______. [ ]
A.
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B.
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C.
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【单选题】Look! There are so many students _______ in the pool.
A.
swim
B.
are swimming
C.
swims
D.
swimming
【简答题】Many students have hobbies, such as reading, painting, growing vegetables in their gardens, and looking after animals. Some hobbies are relaxing and ___(1) are creative（有创造性的）. Hobbies can develop you...
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