[单选题]冷轧带肋钢筋中（　）为普通钢筋混凝土用钢筋。
A.HPB300
B.HRB400
C.CRB550
D.CRB650

PHUKET, Thailand--Narkis Koral, 23, and Oren Mesika, 24, had no sense of the terrible tsunami (海啸) that hit Southeast Asia. They were having a good time on the island of Koh Chang in Thailand and only learned of their present situation hours later, through friends who received phone calls from home.
Even though the pair, both from Arad, escaped the tsunami’s anger, it did not change the fact that their parents were worried.
"Our mothers worried a lot," says Koral. "They asked us to leave immediately and return to Israel. They offered to arrange flights, anything we wanted, just return."
Dana Kuchansky’s father is also worried Kuchansky, 28, and her partner were in Kofun, a small island hit hard by the tsunami. After a night spent on the top of the mountain in the center of the island, the two were taken for free to Bangkok, where they were expected to fly to Israel.
On the telephone, the worried father made s
A. 50 agorot is too little an amount for the ordinary Israetis
B. as an official in charge, the mother made so many calls
C. the writer may come from Israel rather than from some other country
D. all the young couples traveling in Thailand remained safe and sound