What makes the space shuttle（ ）is that it takes off like a rocket but lands like an airplane.Thus,when it has accomplished its mission,it can be ready for another trip in about two weeks.

单选题

What makes the space shuttle（ ）is that it takes off like a rocket but lands like an airplane.Thus,when it has accomplished its mission,it can be ready for another trip in about two weeks.

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单选题

Ragu makes sure that his work unit knows what is expected, schedules the work and sets deadlines, and assigns people to different tasks. Ragu is:

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材料题

ny open space such as a square or a park.They must wait there until the teacher tells them it is safe to go.At homeIf you are at home when the earthquake occurs,get immediately under the table in the living room or kitchen.Choose the biggest and strongest table you can find.You must not go anywhere near the window and dont go out onto the balcony（阳台）.Once the tremors have stopped,you can come out from under the table but you must leave the building straight away.You should walk down the stairs

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材料题

ny open space such as a square or a park.They must wait there until the teacher tells them it is safe to go.At homeIf you are at home when the earthquake occurs,get immediately under the table in the living room or kitchen.Choose the biggest and strongest table you can find.You must not go anywhere near the window and dont go out onto the balcony（阳台）.Once the tremors have stopped,you can come out from under the table but you must leave the building straight away.You should walk down the stairs

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单选题

When a teacher corrects the errors of his/her students,what measures shouldn’t ，he/she use at first?A.To give the students who makes error the first opportunity to correct it.B.

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