先天性心脏病患儿做胸透可采用
A．五人搬运法B．单人法搬运至平车上C．双人法搬运至平车上D．三人法搬运至平车上E．四人法搬运至平车上
参考答案：B
Passengers on board aren't allowed _____ calls during take-off．
A．making or receiving
B．to make or receive
C．to have made or received
D．having made or received
《桑干河上》与《暴风骤雨》比较。
