法洛四联症缺氧发作最有效的抢救措施是静脉注射西地兰。()
参考答案：错
It is well known that ____ the flower is to grow,____the price is in the market.
A．harder; higher
B．the harder; the higher
C．the more hard ; the more high
D．more harder ; more high
道德情感从（）发展起来。
A、1岁以后
B、2岁以后
C、3岁以后
D、4岁以后
