玛瑙和玉髓均为隐晶质石英,矿物学中统称为玉髓。()

A. They are lining up for trucks to take them to safety.
B. They want to watch the unusual volcano eruption.
C. They hope the government can provide some money.
D. They think volcanic ash is good to their crops.

American teas are fermented.
B. Green tea can lower cholesterol.
C. Heavy smoking can lead to cancer.
D. Tea can break apart cancel cells.

A. Syrian military forces have been in Lebanon for more than 30 years.
B. Huge demonstration in Beirut.
C. International condemnation.
D. The death of the former Prime Minister Rafiq Hariri.