单项选择题

____ from space, our earth, with water covering 70% of its surface, appears as a "blue planet".

A．Seeing
B．To be seen
C．Seen
D．Having seen

相关考题

The fried fish we ate at the restaurant yesterday is de...

单项选择题The fried fish we ate at the restaurant yesterday is delicious. I’d like to have it again even if it costs____.

A．as twice much
B．twice as much
C．much as twice
D．as much twice

what is the main idea of the passage（）A．Many countries ...

单项选择题what is the main idea of the passage（）

A．Many countries are trying to reduce the cost of making coins.
B．These days a penny made is a penny wasted.
C．There is disagreement over whether the U.S. should stop using pennies.
D．Many countries have stopped using pennies.