When radar signals are sent to the moon, the moon, being solid, reflects them.
举一反三
- From their talk, we know that ______. A: both of them hope to fly to the moon B: one of them hopes to fly to the moon C: neither of them hopes to fly to the moon D: only Fred hopes to fly to the moon
- The money will be used to keep a space vehicle on the moon busy ______ back to the earth photographs and other information about the surface of the moon. A: to send B: being sent C: to be sent D: sending
- When the moon is ______ it is a full moon.
- Moon cakes used to be _____ when people went outside to admire the fair moon. A: the snack B: the gift to exchange C: the sacrifice offered to the moon D: the symbol of the moon
- When the clouds moved in, the moon was no longer ______ sight.