When does the next train depart（　）

A:pull up B:pull down C:pull out D:pull in

When does the next train {{U}}depart?{{/U}}

A:pull up B:pull down C:pull out D:pull in

When does the next train depart（）

A:pull up B:pull down C:pull out D:pull in

We do not feel the gravitational pull of a packet of butter because

A:it is too small to have a gravitational pull of its own. B:its pull is so small that we tend to ignore it. C:its pull disappears in the presence of the earth's gravitation. D:it tends to melt and loses its gravitational pull.

We do not feel the gravitational pull of a packet of butter because

A:it is too small to have a gravitational pull of its own. B:its pull is so small that we tend to ignore it. C:its pull disappears in the presence of the earth's gravitation. D:it tends to melt and loses its gravitational pull.

When does the next train depart?

A:pull up B:pull down C:pull out D:pull in