1. This method has been referred to in an earlier paper.
2. I do not think this instrument can be relied upon.
3. This data cannot be accounted for by the existing theory.
4. This theory has been referred to as the “big bang” theory.
5. The best treatment of this syndrome is generally agreed upon.
6. Rapid development of chemical technology has been called for by the needs of the national economy.
Объяснение:
