Geostationary satellites are the man-made satellites which . A: are always fixed in the regular position B: sometimes move with the earth C: are synchronizing with the movement of the earth D: can not fly off from the ground

It’s the Axes System used to define the Newton's Laws of Motion. A: Inertia B: Earth-fixed C: Body D: Navigational

_____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface

I’m going to have my car______. () A: to be fixed B: to fix C: fixed D: to fixed

The day for the meeting ________, they all left the conference room. A: was fixed B: fixing C: fixed D: being fixed

Our car still isn't working right; the mechanic ______. A: could not have fixed it B: just fixed it C: might have fixed it D: should not have fixed it

Fixed overhead budget variance is the difference between actual fixed overhead and budgeted fixed overhead . （ ） A: 错 B: 对

The earth _______ round the sun, and the moon _________ round the earth

______ is the center of our planetary system was a difficult concept to grasp in the Middle Ages.(1.0) A: It is the sun and not the earth B: Being the sun and not the earth C: The sun and not the earth D: That the sun and not the earth

The purpose of Earth Day is ______. A: to help people memorize the earth B: to help people to learn how to protect the earth C: to unite all the people on the earth D: all of the above