As discovered by expedition scientists Antarctica

Growing numbers of scientists therefore see Antarctica as a distant early warning

【C16】A．exposed toB．discovered byC．experimented byD．absorbed by

A team of American and Canadian scientists discovered thatA．underwater explosions caused w

Dr. Harvey Gates, the noted scientist, might never have discovered the Kamron lizard （蜥蜴

This gold mine was discovered by accident.

As discovered by expedition scientists Antarctica